[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fxLN3MUwXCdr5RPjwZYIDpOj8CHyjOmngWTgoKXPtZbg":3,"$f66zaMC-wsGi5JxLjDIaDC_rrNnKLuv947dKmrRRwd2w":36,"$f3Ft0rKFJHppdzE-vuveecxx1BUcg9iOlMLtyzf_MJDg":258,"$fucxFBm2ZjZfGSdmdRaSNGBI_F0jJme4f0GTvzUhQfL8":321},[4,8,12,16,20,24,28,32],{"title":5,"slug":6,"path":7},"About Microbeonline.com","about-microbeonline-com","\u002Fabout-microbeonline-com\u002F",{"title":9,"slug":10,"path":11},"About Me","about-me","\u002Fabout-microbeonline-com\u002Fabout-me\u002F",{"title":13,"slug":14,"path":15},"Advertise with Us","advertise-us","\u002Fadvertise-us\u002F",{"title":17,"slug":18,"path":19},"Privacy Policy","privacy-policy","\u002Fprivacy-policy\u002F",{"title":21,"slug":22,"path":23},"Authors","authors","\u002Fauthors\u002F",{"title":25,"slug":26,"path":27},"Microbes","microbes","\u002Fmicrobes\u002F",{"title":29,"slug":30,"path":31},"Books","recommended-books","\u002Frecommended-books\u002F",{"title":33,"slug":34,"path":35},"Tags","tags","\u002Ftags\u002F",{"type":37,"data":38},"blog",{"slug":39,"title":40,"description":41,"seoTitle":42,"seoDescription":42,"author":43,"createdDate":44,"lastUpdatedDate":45,"draft":46,"category":47,"image":42,"body":48,"faq":49,"commentsClosed":46,"tags":71,"related":72,"comments":254},"cell-membrane-structure-function","Cell Membrane: Structure, Function, and the Three Models (Sandwich, Unit, Fluid Mosaic)","\u003Cp>Cell membrane structure and function explained through its three historical models: the Danielli-Davson sandwich model, Robertson's unit membrane model, and the Singer-Nicolson fluid mosaic model. With a labeled diagram, comparison table, and exam notes.\u003C\u002Fp>",null,"Acharya Tankeshwar","2025-09-03","2026-09-05",false,"cell-biology","The cell membrane is the thin boundary that separates the inside of a cell from the world outside it. Every cell has one, and it does two jobs at once: it holds the cell together as a defined unit, and it controls what is allowed in and out. It is also called the plasma membrane, the plasmalemma, or simply a biological membrane, and these terms all mean the same thing.\n\nWhat makes the cell membrane an interesting topic is not just what it is, but how our understanding of it changed. Scientists could not see the membrane directly until the electron microscope arrived in the 1950s, so its structure was worked out in stages, through three successive models. This article follows that story, from the early sandwich model, through Robertson's unit membrane model, to the fluid mosaic model we accept today, and then covers what the membrane is made of and what it does.\n\n## Structure of the cell membrane\n\nThe membrane that surrounds the whole cell is the plasma membrane. Cells also have internal membranes that wrap their organelles (the nuclear envelope, the membranes of mitochondria, and so on), and all of these share the same basic design. This article focuses on the plasma membrane, but the structural principles below apply to biological membranes in general.\n\nUnder the electron microscope, the cell membrane is extremely thin, only about 7.5 to 10 nanometers thick. Three models have been proposed to explain how it is built: the sandwich model, the unit membrane model, and the fluid mosaic model.\n\n### Sandwich model (Danielli-Davson model)\n\nIn 1935, Hugh Davson and James Danielli proposed the sandwich model. They pictured the membrane as four layers: a central phospholipid bilayer coated on both sides by a layer of protein, giving a protein-lipid-lipid-protein (P-L-L-P) arrangement, like the filling and bread of a sandwich.\n\nIn each phospholipid layer, the hydrophilic (water-loving) heads face outward toward the protein coats, and the hydrophobic (water-fearing) tails point inward toward the center. The heads are made of glycerol and phosphate; the tails are fatty acid chains. This was a reasonable guess, but it treated the membrane as a rigid, fixed structure.\n\n**Limitations of the sandwich model**\n\nThe sandwich model was eventually rejected, for several reasons:\n\n- It described the membrane as a stable, solid structure, but the real membrane is dynamic and semi-solid (quasifluid), not rigid.\n- It could not explain the variability of membranes, which differ from one another in form, composition, and thickness.\n- It could not explain how solutes and solvents are transported across the membrane.\n- It could not account for active transport or bulk transport of materials.\n- The measured lipid-to-protein ratio did not fit the model.\n\n### Unit membrane model (Robertson's model)\n\nIn 1959, J. David Robertson proposed the unit membrane model, and unlike the earlier sandwich model, his was based on what could actually be seen under the electron microscope, not just inferred.\n\nWhen Robertson examined membranes fixed and stained for electron microscopy, every membrane showed the same three-layered (trilaminar) appearance: two dark (electron-dense) outer lines with a lighter line between them, often described as a \"railroad track.\" He interpreted the two dark lines as protein layers and the light middle line as the lipid bilayer, giving the same protein-lipid-protein arrangement the sandwich model had predicted, now with visual evidence behind it.\n\nThe measured thickness was about 75 Å (7.5 nm): two outer protein layers of roughly 20 Å each, and a central lipid layer of about 35 Å.\n\nThe important idea in the name is \"unit.\" Robertson found this same trilaminar pattern in every membrane he looked at, the plasma membrane, the nuclear envelope, the membranes of organelles, and concluded that all biological membranes share one common design. In effect, the unit membrane model is the sandwich model confirmed and generalized by microscopy.\n\n**Why it was still not the final answer.** Like the sandwich model, the unit membrane model showed the membrane as a static, symmetrical, three-layered sheet with protein spread evenly over the surface. It could not explain how substances move across the membrane, why membranes differ from one another, or the evidence that proteins actually sit within the lipid, not just on top of it. Those problems were resolved by the fluid mosaic model.\n\n### Fluid mosaic model of the cell membrane\n\nIn 1972, Singer and Nicolson proposed the fluid mosaic model, which is the model accepted today. It describes the membrane as a quasifluid structure. Quasifluid means semi-fluid: the membrane is not solid and rigid, but it is not a free-flowing liquid either. Its lipids and many of its proteins can drift sideways within the layer, so the membrane behaves partly like a fluid, which is exactly what lets it bend, self-repair, and let proteins move. The model is often summed up as \"protein icebergs floating in a sea of lipid.\"\n\n\u003Cfigure>\n\u003Cimg src=\"https:\u002F\u002Fassets.microbeonline.com\u002Fblogs\u002Ffluid-mosaic-model-of-cell-membrane.png\" alt=\"Labeled fluid mosaic model diagram of the cell membrane showing the phospholipid bilayer with hydrophilic heads and hydrophobic tails, integral and peripheral proteins, cholesterol, and glycoprotein and glycolipid chains on the outer surface.\" width=\"1644\" height=\"957\" draggable=\"false\" contenteditable=\"false\">\u003Cfigcaption>Figure: Fluid mosaic model of the cell membrane (Singer and Nicolson, 1972)\u003C\u002Ffigcaption>\n\u003C\u002Ffigure>\n\nThe phospholipids form the bilayer, with polar hydrophilic heads facing the two outer surfaces and non-polar hydrophobic tails facing the center. The proteins are of two types:\n\n- **Extrinsic (peripheral) proteins** sit on the two surfaces of the membrane in a floating form.\n- **Intrinsic (integral) proteins** are embedded in the lipid bilayer, either partly or completely spanning it (as tunnel proteins). Water, ions, and water-soluble solutes pass through the channels these proteins form.\n\nMembranes contain five broad kinds of protein by function:\n\n- **Structural proteins**, which give the membrane stability.\n- **Channel proteins**, which transport water and dissolved substances.\n- **Carrier proteins**, which drive active transport.\n- **Enzymes**, which carry out metabolic reactions at the membrane.\n- **Receptor proteins**, which bind hormones and take part in nerve impulse conduction.\n\nOn the outer surface, lipids and proteins join short sugar chains (oligosaccharides) to form glycolipids and glycoproteins, which are important for cell recognition.\n\n### The three membrane models compared\n\n| Model | Proposed by | Year | Core idea | Status |\n| --- | --- | --- | --- | --- |\n| Sandwich (lamellar) | Davson and Danielli | 1935 | Lipid bilayer coated on both sides by protein (P-L-L-P); rigid | Rejected |\n| Unit membrane | J. D. Robertson | 1959 | Trilaminar protein-lipid-protein seen on EM; all membranes share one design; about 7.5 nm | Rejected (refined) |\n| Fluid mosaic | Singer and Nicolson | 1972 | Proteins float in and on a fluid lipid bilayer; dynamic and asymmetric | Accepted |\n\nThe three models form a sequence. Each kept the lipid bilayer at the center and changed how protein was arranged, moving from protein as rigid outer sheets (sandwich, unit) to protein embedded within a fluid bilayer (fluid mosaic).\n\n## Functions of the cell membrane\n\nThe membrane's central job is to be a selective barrier: it protects the cell contents while controlling what crosses. Beyond that, it does several specific jobs:\n\n- Glycolipids and glycoproteins on the membrane help with cell recognition.\n- Antigens in the membrane are the basis of blood grouping, the immune response, and the acceptance or rejection of transplants.\n- Microvilli, which are folds of the membrane, increase surface area for absorbing food materials.\n- Pseudopodia, formed by the membrane, allow some cells to move.\n- Carrier proteins carry out the active transport of materials.\n- Endocytosis and pinocytosis bring materials into the cell in bulk.\n- Exocytosis removes waste materials from the cell.\n- Osmosis moves water across the membrane, and diffusion exchanges gases.\n\n## How to Remember\n\n**Three models, one storyline.** Sandwich (1935) then unit membrane (1959) then fluid mosaic (1972). The lipid bilayer never changed; only the protein arrangement did. Guess it (sandwich), see it (unit membrane), correct it (fluid mosaic).\n\n**P-L-L-P for the sandwich.** Protein-Lipid-Lipid-Protein: protein bread on the outside, lipid filling in the middle. The old, rigid model.\n\n**\"Unit\" means universal.** Robertson's point was that every membrane looks the same on EM (trilaminar), so it is one universal design. Unit equals one pattern for all membranes.\n\n**Icebergs in a sea of lipid.** The fluid mosaic model: proteins float in a moving lipid sea. If you remember \"fluid,\" you remember why the membrane can bend, repair, and transport.\n\n**Quasifluid equals semi-fluid.** Not solid, not liquid. Things drift sideways, but the sheet holds together.\n\n## Key exam facts\n\n| Question | Answer |\n| --- | --- |\n| Other names for the cell membrane | Plasma membrane, plasmalemma, biological membrane |\n| Thickness of the cell membrane | About 7.5 to 10 nm |\n| Who proposed the sandwich model? | Davson and Danielli (1935) |\n| Who proposed the unit membrane model? | J. D. Robertson (1959) |\n| Who proposed the fluid mosaic model? | Singer and Nicolson (1972) |\n| Which model is accepted today? | The fluid mosaic model |\n| What does the unit membrane look like on EM? | Trilaminar (three layers): dark-light-dark |\n| What does quasifluid mean? | Semi-fluid; lipids and proteins can move sideways |\n| Two types of membrane protein | Extrinsic (peripheral) and intrinsic (integral) |\n| Main lipid of the membrane | Phospholipid (arranged as a bilayer) |\n\n## Where Students Get Confused\n\n**The sandwich model and the unit membrane model are the same thing.** They are closely related but not identical. The sandwich model (1935) was a proposal; the unit membrane model (1959) was Robertson's version based on actual electron microscope images showing the trilaminar pattern, and it added the claim that all membranes share this one design. The unit membrane model is the sandwich idea confirmed and generalized.\n\n**Plasma membrane and cell membrane are different structures.** They are the same thing. Plasma membrane, cell membrane, and plasmalemma are three names for the single membrane surrounding the cell.\n\n**The fluid mosaic model means the membrane is a liquid.** It is quasifluid, meaning semi-fluid. Components drift sideways, but the membrane stays intact as a sheet. It is not a free-flowing liquid.\n\n**Proteins only sit on the surface of the membrane.** That was the old (sandwich and unit) view. In the fluid mosaic model, integral (intrinsic) proteins are embedded through the lipid bilayer, and only peripheral (extrinsic) proteins sit on the surface.\n\n**The membrane is only lipid.** It is lipid, protein, and carbohydrate. The phospholipid bilayer is the framework, but proteins do most of the transport and signaling work, and carbohydrates (as glycolipids and glycoproteins) handle recognition.\n\n## References\n\n1. Alberts B, Heald R, Johnson A, et al. Molecular Biology of the Cell. 7th ed. New York: W. W. Norton; 2022.\n2. Iwasa J, Marshall W. Karp's Cell and Molecular Biology. 8th ed. Hoboken: Wiley; 2016.\n3. Reece JB, Urry LA, Cain ML, et al. Campbell Biology. 12th ed. New York: Pearson; 2021.",[50,53,56,59,62,65,68],{"question":51,"answer":52},"\u003Cp>What is the cell membrane?\u003C\u002Fp>","\u003Cp>The cell membrane is the thin boundary that surrounds a cell and separates its inside from the outside environment. It controls what enters and leaves the cell. It is also called the plasma membrane or plasmalemma.\u003C\u002Fp>",{"question":54,"answer":55},"\u003Cp>What are the three models of the cell membrane?\u003C\u002Fp>","\u003Cp>The sandwich model (Davson and Danielli, 1935), the unit membrane model (Robertson, 1959), and the fluid mosaic model (Singer and Nicolson, 1972). The fluid mosaic model is the one accepted today.\u003C\u002Fp>",{"question":57,"answer":58},"\u003Cp>Who proposed the unit membrane model?\u003C\u002Fp>","\u003Cp>J. David Robertson, in 1959. Using the electron microscope, he saw that all membranes have the same three-layered (trilaminar) appearance, about 7.5 nm thick, and proposed that this \"unit\" design is common to all biological membranes.\u003C\u002Fp>",{"question":60,"answer":61},"\u003Cp>What is the difference between the sandwich model and the unit membrane model?\u003C\u002Fp>","\u003Cp>The sandwich model was a proposal that the membrane is a lipid bilayer coated by protein. The unit membrane model was Robertson's confirmation of that layered structure using actual electron microscope images, plus the idea that every membrane shares this same design. The unit membrane model is essentially the sandwich model backed by microscopy.\u003C\u002Fp>",{"question":63,"answer":64},"\u003Cp>What does quasifluid mean?\u003C\u002Fp>","\u003Cp>Quasifluid means semi-fluid. In the fluid mosaic model, the membrane is neither solid nor fully liquid: its lipids and many proteins can move sideways within the layer, so it behaves partly like a fluid while still holding together as a sheet.\u003C\u002Fp>",{"question":66,"answer":67},"\u003Cp>Is the cell membrane the same as the plasma membrane?\u003C\u002Fp>","\u003Cp>Yes. Cell membrane, plasma membrane, and plasmalemma are different names for the same structure, the membrane that surrounds the cell.\u003C\u002Fp>",{"question":69,"answer":70},"\u003Cp>How thick is the cell membrane?\u003C\u002Fp>","\u003Cp>About 7.5 to 10 nanometers. On the electron microscope it appears as three layers (two dark, one light), which is the trilaminar or \"unit membrane\" appearance.\u003C\u002Fp>",[],[73,105,136,145,170,199,224],{"slug":74,"title":75,"description":76,"seoTitle":42,"seoDescription":42,"author":77,"createdDate":78,"lastUpdatedDate":45,"draft":46,"category":47,"image":42,"faq":79,"tags":104},"mitochondria-structure-and-location","Mitochondria: Structure, Function, Location, and Why It Has Its Own DNA","\u003Cp>Mitochondria structure (cristae, matrix, double membrane), function in ATP production, location and number in the cell, mitochondrial DNA and the endosymbiotic theory, plus Janus Green B vital staining. Foundation-level notes for biology and pre-medical students.\u003C\u002Fp>","Ashma Shrestha","2022-12-13",[80,83,86,89,92,95,98,101],{"question":81,"answer":82},"\u003Cp>Where are mitochondria located in the cell?\u003C\u002Fp>","\u003Cp>In the cytoplasm of eukaryotic cells, outside the nucleus. They move around and gather in the parts of the cell that need the most energy. The number ranges from none in mature red blood cells to a few thousand in liver and heart muscle cells.\u003C\u002Fp>",{"question":84,"answer":85},"\u003Cp>What is the main function of mitochondria in an animal cell?\u003C\u002Fp>","\u003Cp>To produce ATP, the cell's usable energy, by oxidative phosphorylation. Mitochondria also store calcium, generate heat in brown fat, and help trigger controlled cell death (apoptosis).\u003C\u002Fp>",{"question":87,"answer":88},"\u003Cp>Is mitochondria singular or plural?\u003C\u002Fp>","\u003Cp>Plural. One is a mitochondrion; two or more are mitochondria.\u003C\u002Fp>",{"question":90,"answer":91},"\u003Cp>Why do mitochondria have their own DNA?\u003C\u002Fp>","\u003Cp>Because they descend from a free-living bacterium that was taken into an early cell (the endosymbiotic theory). They kept a small loop of their own circular DNA and their own 70S ribosomes, which is why they can make some of their own proteins and why mtDNA looks bacterial.\u003C\u002Fp>",{"question":93,"answer":94},"\u003Cp>Do bacteria have mitochondria?\u003C\u002Fp>","\u003Cp>No. Bacteria are prokaryotes and have no organelles. Their cell membrane carries out respiration and makes ATP, doing the job that mitochondria do in eukaryotic cells.\u003C\u002Fp>",{"question":96,"answer":97},"\u003Cp>Which structure performs the function of mitochondria in bacteria?\u003C\u002Fp>","\u003Cp>The bacterial cell membrane (plasma membrane). The respiratory electron transport chain is built into the membrane, so it produces ATP in place of a mitochondrion.\u003C\u002Fp>",{"question":99,"answer":100},"\u003Cp>What is Janus Green B used for?\u003C\u002Fp>","\u003Cp>It is a vital stain that makes mitochondria visible in living cells. Active mitochondria keep the dye in its blue-green oxidised form (through the enzyme cytochrome oxidase), so they show up as blue-green granules while the rest of the cell stays colourless.\u003C\u002Fp>",{"question":102,"answer":103},"\u003Cp>Which parent do you inherit mitochondrial DNA from?\u003C\u002Fp>","\u003Cp>Your mother. Sperm contribute almost no mitochondria to the egg, so mtDNA is passed down the maternal line.\u003C\u002Fp>",[],{"slug":106,"title":107,"description":108,"seoTitle":42,"seoDescription":42,"author":77,"createdDate":109,"lastUpdatedDate":45,"draft":46,"category":47,"image":42,"faq":110,"tags":135},"lysosome-structure-enzymes-function","Lysosome: Structure, Enzymes, Function, and Lysosomal Storage Diseases","\u003Cp>Lysosome structure, its acid hydrolase enzymes, how it forms from the Golgi, autophagy and the \"suicide bag\" concept, and the lysosomal storage diseases (Tay-Sachs, Gaucher, Pompe, Hurler) that make this organelle clinically important.\u003C\u002Fp>","2025-09-05",[111,114,117,120,123,126,129,132],{"question":112,"answer":113},"\u003Cp>What is the main function of the lysosome?\u003C\u002Fp>","\u003Cp>To digest and recycle materials in the cell. It breaks down worn-out organelles and large molecules, destroys engulfed bacteria, and returns the resulting building blocks (amino acids, sugars, fatty acids) to the cell for reuse. It is often called the cell's digestive system or stomach.\u003C\u002Fp>",{"question":115,"answer":116},"\u003Cp>Why is the lysosome called a suicide bag?\u003C\u002Fp>","\u003Cp>Because it is a membrane sac filled with digestive enzymes that could destroy the cell if released. If the membrane ruptures, the enzymes spill out and digest the cell, a process called autolysis. The name, coined by Christian de Duve, highlights this danger. In practice the enzymes are kept safely sealed and depend on acidic pH to work.\u003C\u002Fp>",{"question":118,"answer":119},"\u003Cp>Who discovered the lysosome?\u003C\u002Fp>","\u003Cp>Christian de Duve, a Belgian scientist, in 1955. He shared the Nobel Prize in Physiology or Medicine in 1974 for discoveries about the organization of the cell, including lysosomes and peroxisomes.\u003C\u002Fp>",{"question":121,"answer":122},"\u003Cp>How are lysosomes formed?\u003C\u002Fp>","\u003Cp>Their enzymes are made in the rough endoplasmic reticulum, tagged with mannose-6-phosphate in the Golgi apparatus, and then packaged into vesicles that bud off from the Golgi to form lysosomes.\u003C\u002Fp>",{"question":124,"answer":125},"\u003Cp>Why is the inside of the lysosome acidic?\u003C\u002Fp>","\u003Cp>Because its enzymes work best at acidic pH (about 4.5 to 5.0). A proton pump in the lysosomal membrane pumps hydrogen ions inside to keep it acidic. This also protects the cell, since the enzymes are much less active at the neutral pH of the cytosol.\u003C\u002Fp>",{"question":127,"answer":128},"\u003Cp>What is a lysosomal storage disease?\u003C\u002Fp>","\u003Cp>An inherited disease in which one lysosomal enzyme is missing or faulty, so its specific substrate cannot be broken down and accumulates inside the cell, causing damage. Examples include Tay-Sachs, Gaucher, Pompe, and Hurler syndrome. Each is caused by the deficiency of a specific enzyme.\u003C\u002Fp>",{"question":130,"answer":131},"\u003Cp>What is the difference between autophagy and heterophagy?\u003C\u002Fp>","\u003Cp>Heterophagy is the digestion of material brought in from outside the cell, such as bacteria. Autophagy is the digestion of the cell's own worn-out parts. Both processes end with a lysosome digesting the material.\u003C\u002Fp>",{"question":133,"answer":134},"\u003Cp>Do plant cells have lysosomes?\u003C\u002Fp>","\u003Cp>Plant cells usually do not have classic lysosomes. The large central vacuole of the plant cell carries out similar digestive functions using hydrolytic enzymes.\u003C\u002Fp>",[],{"slug":137,"title":138,"description":139,"seoTitle":42,"seoDescription":42,"author":140,"createdDate":141,"lastUpdatedDate":142,"draft":46,"category":47,"image":42,"faq":143,"tags":144},"cell-division-mitosis-and-meiosis","Cell Division: Mitosis and Meiosis (Stages, Differences, and How to Remember Them)","\u003Cp>Mitosis and meiosis explained simply: every stage in order, the key differences in one table, which phase is longest and shortest, and memory tricks for your exam.\u003C\u002Fp>","Samikshya Acharya","2023-09-26","2026-08-25",[],[],{"slug":146,"title":147,"description":148,"seoTitle":42,"seoDescription":42,"author":77,"createdDate":149,"lastUpdatedDate":45,"draft":46,"category":47,"image":42,"faq":150,"tags":169},"animal-cell","Animal Cell: Organelles, Functions, and How to Remember Them","\u003Cp>Animal cell explained simply: every organelle, what it does, how the parts work together, and memory tricks to recall them for your exam.\u003C\u002Fp>","2023-01-11",[151,154,157,160,163,166],{"question":152,"answer":153},"\u003Cp>What is an animal cell in simple words?\u003C\u002Fp>","\u003Cp>An animal cell is the basic unit that makes up the body of an animal. It has no cell wall, is wrapped in a thin cell membrane, and keeps its DNA inside a nucleus. Inside it are small compartments called organelles, each doing a specific job.\u003C\u002Fp>",{"question":155,"answer":156},"\u003Cp>What shape is an animal cell?\u003C\u002Fp>","\u003Cp>There is no single shape. Animal cells take the shape that suits their job. Nerve cells are long and thread-like, red blood cells are flat discs, and muscle cells are long. Because there is no cell wall, the shape can vary widely.\u003C\u002Fp>",{"question":158,"answer":159},"\u003Cp>What are the main organelles of an animal cell?\u003C\u002Fp>","\u003Cp>The main ones are the nucleus, mitochondria, ribosomes, rough and smooth endoplasmic reticulum, Golgi apparatus, lysosomes, peroxisomes, and the cytoskeleton (microtubules and microfilaments), all held inside the cell membrane.\u003C\u002Fp>",{"question":161,"answer":162},"\u003Cp>Do animal cells have vacuoles?\u003C\u002Fp>","\u003Cp>Yes, but they are small and few. Plant cells have one large vacuole; animal cells have several tiny ones that store and remove waste.\u003C\u002Fp>",{"question":164,"answer":165},"\u003Cp>What is the difference between an animal cell and a plant cell?\u003C\u002Fp>","\u003Cp>An animal cell has no cell wall, no chloroplasts, and only small vacuoles. A plant cell has a rigid cell wall, chloroplasts for photosynthesis, and one large central vacuole. Both are eukaryotic and share most other organelles.\u003C\u002Fp>",{"question":167,"answer":168},"\u003Cp>Which organelle is the powerhouse of the cell?\u003C\u002Fp>","\u003Cp>The mitochondria. They release energy from food and store it as ATP, the energy the cell can actually use.\u003C\u002Fp>",[],{"slug":171,"title":172,"description":173,"seoTitle":42,"seoDescription":42,"author":77,"createdDate":174,"lastUpdatedDate":175,"draft":46,"category":47,"image":42,"faq":176,"tags":198},"plant-cell-parts","Plant Cell: Parts, Functions, and How It Differs From an Animal Cell","\u003Cp>Every part of a plant cell explained simply, what each one does, how a plant cell differs from an animal cell, and easy ways to remember them for your exam.\u003C\u002Fp>","2025-07-30","2026-08-24",[177,180,183,186,189,192,195],{"question":178,"answer":179},"\u003Cp>What are the main parts of a plant cell?\u003C\u002Fp>","\u003Cp>A plant cell has a cell wall, cell membrane, cytoplasm, nucleus, a large central vacuole, chloroplasts and other plastids, mitochondria, ribosomes, endoplasmic reticulum, and Golgi bodies.\u003C\u002Fp>",{"question":181,"answer":182},"\u003Cp>What are the three parts a plant cell has that an animal cell does not?\u003C\u002Fp>","\u003Cp>A cell wall, chloroplasts, and a large central vacuole. These three are the main features that set a plant cell apart from an animal cell.\u003C\u002Fp>",{"question":184,"answer":185},"\u003Cp>Do plant cells have mitochondria?\u003C\u002Fp>","\u003Cp>Yes. Plant cells have mitochondria to release energy from food, and chloroplasts to make that food from sunlight. They need both.\u003C\u002Fp>",{"question":187,"answer":188},"\u003Cp>Is there cytoplasm in a plant cell?\u003C\u002Fp>","\u003Cp>Yes. Plant cells have cytoplasm, just like animal cells. It is the jelly-like material that fills the cell and holds the organelles.\u003C\u002Fp>",{"question":190,"answer":191},"\u003Cp>What is the function of the cell wall in a plant cell?\u003C\u002Fp>","\u003Cp>The cell wall is a rigid outer layer made mainly of cellulose. It gives the cell a fixed shape, supports the plant, protects the cell, and stops it from bursting when it takes in water.\u003C\u002Fp>",{"question":193,"answer":194},"\u003Cp>Why is a plant cell green?\u003C\u002Fp>","\u003Cp>Because of chloroplasts, which contain the green pigment chlorophyll. Chlorophyll captures sunlight for photosynthesis.\u003C\u002Fp>",{"question":196,"answer":197},"\u003Cp>What is the largest part of a mature plant cell?\u003C\u002Fp>","\u003Cp>The central vacuole. In a mature cell it can fill most of the space and push the other parts against the cell wall.\u003C\u002Fp>",[],{"slug":200,"title":201,"description":202,"seoTitle":42,"seoDescription":203,"author":77,"createdDate":204,"lastUpdatedDate":45,"draft":46,"category":47,"image":42,"faq":205,"tags":222},"similarities-and-differences-between-plant-and-animal-cells","Similarities and Differences Between Plant and Animal Cells (With Diagram)","\u003Cp>Plant and animal cells are both eukaryotic, so they share a lot. Here are their key similarities and differences, why they share them, and a clear comparison.\u003C\u002Fp>","Diagram comparing a plant cell and an animal cell, showing the shared organelles and the plant-only cell wall, chloroplasts, and central vacuole.","2023-09-11",[206,209,212,215,217,219],{"question":207,"answer":208},"\u003Cp>What are the main similarities between plant and animal cells?\u003C\u002Fp>","\u003Cp>Both are eukaryotic cells, so both have a true nucleus, a cell membrane, cytoplasm, mitochondria, ribosomes, endoplasmic reticulum, a Golgi apparatus, and a cytoskeleton. They also use the same DNA and genetic code. In short, they share the entire basic eukaryotic cell plan.\u003C\u002Fp>",{"question":210,"answer":211},"\u003Cp>What is the main difference between a plant cell and an animal cell?\u003C\u002Fp>","\u003Cp>The clearest difference is that plant cells have a rigid cell wall and chloroplasts, while animal cells have neither. The cell wall gives plants their fixed shape and support, and chloroplasts let plants make their own food by photosynthesis, something animal cells cannot do.\u003C\u002Fp>",{"question":213,"answer":214},"\u003Cp>Name one feature present in both a plant and an animal cell.\u003C\u002Fp>","\u003Cp>The nucleus, or the cell membrane. Both are core features of all eukaryotic cells, so both are present in plant and animal cells alike. Mitochondria and ribosomes are also correct answers.\u003C\u002Fp>",{"question":161,"answer":216},"\u003Cp>Yes. Animal cells have small vacuoles. What they lack is the single large central vacuole that fills much of a plant cell and keeps it firm. So the difference is in the size and number of vacuoles, not whether they exist at all.\u003C\u002Fp>",{"question":184,"answer":218},"\u003Cp>Yes. Plant cells have mitochondria as well as chloroplasts. They make food in the chloroplasts and release energy from it in the mitochondria, exactly as animal cells release energy in their mitochondria.\u003C\u002Fp>",{"question":220,"answer":221},"\u003Cp>Why are plant and animal cells so similar?\u003C\u002Fp>","\u003Cp>Because both are eukaryotic and share a common ancestor. They inherited the same basic cell design, DNA in a nucleus, mitochondria for energy, ribosomes for protein. The differences evolved later, as plants adapted to make food and stay in one place while animals adapted to move.\u003C\u002Fp>",[223],"microbiology-for-beginners",{"slug":225,"title":226,"description":227,"seoTitle":42,"seoDescription":42,"author":77,"createdDate":109,"lastUpdatedDate":45,"draft":46,"category":47,"image":42,"faq":228,"tags":253},"cytoplasm-composition-functions","Cytoplasm: Composition, Functions, and How It Differs from Cytosol and Protoplasm","\u003Cp>Cytoplasm explained as a foundation for cell biology: its four components (cytosol, organelles, cytoskeleton, inclusions), its functions, and the clear difference between cytoplasm, cytosol, and protoplasm. With exam notes and common confusions cleared up.\u003C\u002Fp>",[229,232,235,238,241,244,247,250],{"question":230,"answer":231},"\u003Cp>What is the cytoplasm?\u003C\u002Fp>","\u003Cp>The cytoplasm is the whole content of a cell enclosed by the cell membrane, excluding the nucleus. It is a gel-like material made of a fluid (the cytosol) in which the organelles, a protein scaffold (the cytoskeleton), and stored substances (inclusions) are suspended.\u003C\u002Fp>",{"question":233,"answer":234},"\u003Cp>What is the main function of the cytoplasm?\u003C\u002Fp>","\u003Cp>To house and support the cell's activities. Most of the cell's chemical reactions take place in the cytoplasm, it holds the organelles in position, it transports materials around the cell, and it stores enzymes and energy reserves. In bacteria, almost all metabolism happens in the cytoplasm.\u003C\u002Fp>",{"question":236,"answer":237},"\u003Cp>What is the difference between cytoplasm and cytosol?\u003C\u002Fp>","\u003Cp>The cytosol is only the liquid part, the fluid matrix. The cytoplasm is the cytosol plus everything suspended in it: the organelles, cytoskeleton, and inclusions. So the cytosol is a component of the cytoplasm, not another word for it.\u003C\u002Fp>",{"question":239,"answer":240},"\u003Cp>What is the difference between cytoplasm and protoplasm?\u003C\u002Fp>","\u003Cp>Protoplasm is the entire living content of the cell, which is the cytoplasm plus the nucleus. Cytoplasm is everything inside the membrane except the nucleus. In short, protoplasm = cytoplasm + nucleus.\u003C\u002Fp>",{"question":242,"answer":243},"\u003Cp>Is the cytoplasm an organelle?\u003C\u002Fp>","\u003Cp>No. Organelles are specialized structures that sit within the cytoplasm; the cytoplasm is the material in which they are suspended. It is the setting for the organelles, not one of them.\u003C\u002Fp>",{"question":245,"answer":246},"\u003Cp>Who discovered the cytoplasm?\u003C\u002Fp>","\u003Cp>The living cell substance was first observed by Félix Dujardin in 1835 (he called it sarcode). J. E. Purkinje coined the term protoplasm in 1839, and Rudolf von Kölliker coined the term cytoplasm in 1863. Robert Hooke, often wrongly credited, actually described the walls of dead cork cells in 1665.\u003C\u002Fp>",{"question":248,"answer":249},"\u003Cp>What are the four components of the cytoplasm?\u003C\u002Fp>","\u003Cp>The cytosol (the liquid matrix), the organelles (the working structures), the cytoskeleton (the protein scaffold), and the inclusions (stored substances such as starch, glycogen, and lipid droplets).\u003C\u002Fp>",{"question":251,"answer":252},"\u003Cp>What is cytoplasmic streaming?\u003C\u002Fp>","\u003Cp>Cytoplasmic streaming, also called cyclosis, is the flowing movement of the cytoplasm within a living cell. It circulates organelles and materials around the cell and is easily seen in large plant cells.\u003C\u002Fp>",[],{"enabled":255,"threads":256,"total":257},true,[],0,[259,265,271,278,283,288,294,299,305,308,315],{"slug":260,"name":43,"description":261,"image":262,"body":263,"postCount":264},"acharya-tankeshwar","Editor-in-chief","https:\u002F\u002Fassets.microbeonline.com\u002Fauthors\u002Ftankeshwar-acharya-author-microbeonline.jpg","***Tankeshwar Acharya, MSc (Medical Microbiology)***\n\n*Tankeshwar Acharya is an Assistant Professor in the Department of Microbiology at Patan Academy of Health Sciences (PAHS), Nepal, where he has been teaching and practicing clinical microbiology for over 14 years. He is the founder of Microbe Online, one of the leading free microbiology education resources on the web, covering bacteriology, mycology, parasitology, immunology, and clinical laboratory diagnostics written from direct experience in both the classroom and the diagnostic laboratory.*",506,{"slug":266,"name":77,"description":267,"image":268,"body":269,"postCount":270},"ashma-shrestha","SEO Copywriter and Science Communicator\nKathmandu, Nepal","https:\u002F\u002Fassets.microbeonline.com\u002Fauthors\u002Fashma-shrestha.png","Ashma Shrestha holds a Master of Science in Medical Microbiology from the Institute of Science and Technology (IOST), Tribhuvan University, Nepal, where she developed a strong foundation in virology, molecular biology, and diagnostic microbiology.\n\nShe now works as an SEO Copywriter at Resolution Digital, where she combines her scientific training with research-driven content strategy. She is certified in Google Analytics and Google Business Profile (GBP), and brings a data-informed approach to science communication writing content that is not only accurate but structured to reach and serve the students who need it most.\n\nAt microbeonline, Ashma contributes articles primarily in virology and molecular biology, areas she finds most compelling for their mechanistic depth and their growing clinical relevance. Her writing reflects the same standard the site is built on: factual rigor, clear explanation of the *why* behind microbiology concepts, and content that helps students move from memorization to genuine understanding.\n\nShe is passionate about making complex microbiological concepts accessible without sacrificing accuracy; a skill that sits at the intersection of her scientific training and her professional work in content and SEO.",81,{"slug":272,"name":273,"description":274,"image":275,"body":276,"postCount":277},"sushmita-baniya","Sushmita Baniya","Author \u002F Contributor","https:\u002F\u002Fassets.microbeonline.com\u002Fauthors\u002Fsushmita-baniya-1.png","Sushmita Baniya holds an M.Sc. in Medical Microbiology from Tribhuvan University (National College), with a research focus in Genetics and Molecular Biology. She is actively involved in teaching and research in the field of microbiology.",26,{"slug":279,"name":140,"description":274,"image":280,"body":281,"postCount":282},"samikshya-acharya","https:\u002F\u002Fassets.microbeonline.com\u002Fauthors\u002Fsamikshya-acharya.jpeg","Samikshya Sharma completed her postgraduate studies in Medical Microbiology at the Central Department of Microbiology, Tribhuvan University, Nepal. She contributes to Microbeonline with the goal of making foundational and clinical microbiology concepts clear and useful for students in medical, laboratory science, and allied health programs.",20,{"slug":284,"name":285,"description":274,"image":42,"body":286,"postCount":287},"alisha-tripathi","Alisha Tripathi","Alisha Tripathi holds an M.Sc. in Medical Microbiology from National College, Tribhuvan University. With over a year of teaching experience, her academic interests span Molecular Biology, Immunology, and Genetics.",6,{"slug":289,"name":290,"description":291,"image":42,"body":292,"postCount":293},"aastha-shrestha","Aastha Shrestha"," Author \u002F Contributor","Aastha Shrestha is a Biotechnology graduate with an M.Sc. from National College, Tribhuvan University. Her academic interests center on Molecular Biology and Immunology; two fields that are increasingly converging in modern diagnostic and clinical microbiology. \n\nShe contributes to Microbeonline with the goal of making complex concepts in these areas approachable and exam-relevant for students across medical, biotechnology, and laboratory science programs.",9,{"slug":295,"name":296,"description":297,"image":42,"body":42,"postCount":298},"guest-author","Guest Author","Guest Author \u002F Contributor",1,{"slug":300,"name":301,"description":274,"image":302,"body":303,"postCount":304},"srijana-khanal","Srijana Khanal","https:\u002F\u002Fassets.microbeonline.com\u002Fauthors\u002Fsrijana-khanal-1.png","Srijana Khanal is a microbiology educator with nearly a decade of teaching experience, including her role as faculty in the Microbiology Department at National College, NIST. \n\nHer time in the classroom has given her a clear sense of where students struggle and what explanations actually work, a perspective that directly shapes how she writes.\n\nHer academic interests span Immunology, Genetics, Basic Sciences, and Research Methodology, and she brings the same rigor to her writing that she brought to teaching. Alongside academic writing, she has a passion for creative writing -- an instinct that shows in her ability to make dense scientific material readable without sacrificing accuracy.\n\nShe contributes to Microbeonline to extend her teaching reach beyond the classroom, helping medical and laboratory science students across the region build a stronger foundation in microbiology.",15,{"slug":306,"name":307,"description":297,"image":42,"body":42,"postCount":298},"dr-poonam-acharya","Dr. Poonam Acharya",{"slug":309,"name":310,"description":311,"image":312,"body":313,"postCount":314},"nisha-rijal","Nisha Rijal","Microbiologist and AMR Specialist Kathmandu, Nepal","https:\u002F\u002Fassets.microbeonline.com\u002Fauthors\u002Fnisha-rijal-1.png","Nisha Rijal is a microbiologist with nearly 15 years of frontline diagnostic and surveillance experience at the National Public Health Laboratory (NPHL), national reference laboratory under the Department of Health Services, Nepal. She currently works as an AMR Support Officer at the World Health Organization (WHO), Nepal, where her work focuses on strengthening antimicrobial resistance surveillance systems and translating AMR data into actionable public health response.\n\nHer research, published in peer-reviewed journals and cited over 220 times, spans some of the most clinically significant infectious disease challenges in Nepal and South Asia: antimicrobial resistance trends in *Vibrio cholerae* across an 11-year national surveillance dataset, sero-epidemiology of scrub typhus in patients with acute febrile illness, lower respiratory tract infections in HIV-positive patients, and gonococcal resistance surveillance. She was a contributor to Nepal's National Antimicrobial Resistance Containment Action Plan, a foundational policy document for AMR governance in Nepal. You can find list of [Nisha Rijal's article here in Google Scholar.](https:\u002F\u002Fscholar.google.com\u002Fcitations?user=N-Ruq54AAAAJ&hl=en)\n\nThis depth of experience is visible in her writing at Microbeonline. Her 53 published articles cover bacteriology, parasitology, mycology, immunology, and laboratory techniques, and are consistently among the most detailed and clinically grounded content on the site. She brings to every article the same standard that national reference laboratory work demands: methodological precision, awareness of real diagnostic constraints, and an understanding of what results actually mean for patient care in resource-limited settings.\n\nHer areas of particular expertise include antimicrobial susceptibility testing and resistance mechanism detection, quality assurance in clinical microbiology, and laboratory-based infectious disease surveillance.\n\n---\n\n*Nisha Rijal contributes to Microbeonline in a personal capacity. Her views and writing do not represent the positions of the World Health Organization or any other institution.*",55,{"slug":316,"name":317,"description":318,"image":319,"body":320,"postCount":298},"padma-shrestha","Padma Shrestha","Author","https:\u002F\u002Fassets.microbeonline.com\u002Fauthors\u002Fpadma-shrestha.png","Padma Shrestha is from Kathmandu, Nepal. She has completed Masters degree in Medical microbiology from Tribhuvan University. She has great interest in Microbiology and Molecular Biology.",[322,329,335,339,344,349,353,357,361,366,370,375,379,384,389,394,398,402,407,412,416,420,424,428,432,436,440,444,449,454,459,463,467,472,476,480,484,488,492,496,500,504,508,511,515,520,524,528,533,537,541,545,549,553,557,562,566,570,574,578,582,586,590,594,597,601,605,609,612,616,619,622,625,628,631,634,637,640,643,646,649,652,655,658,661],{"slug":323,"name":324,"description":325,"image":326,"body":327,"postCount":328},"gram-negative-cocci","Gram-Negative Cocci and Coccobacilli","Neisseria, Moraxella, Haemophilus and related gram-negative coccal organisms","https:\u002F\u002Fassets.microbeonline.com\u002Ftags\u002Fgram-negative-cocci.png","# Gram Negative Cocci\n\nNeisseria gonorrhoeae, Neisseria meningitides, Moraxella catarrhalis, and other Neisseria spp. are clinically relevant gram-negative cocci.\n\nN. gonorrhoeae is the leading cause of sexually transmitted disease whereas N. meningitides is a leading cause of fatal bacterial meningitis.",14,{"slug":330,"name":331,"description":332,"image":42,"body":333,"postCount":334},"microscopy","Microscopy","Microscope types, components, and microscopy techniques","These are list of blog posts related to microscopy. ",12,{"slug":336,"name":337,"description":338,"image":42,"body":42,"postCount":334},"gram-positive-cocci","Gram-Positive Cocci","Staphylococcus, Streptococcus, Enterococcus, Micrococcus — organisms, diseases, and identification tests",{"slug":340,"name":341,"description":342,"image":42,"body":42,"postCount":343},"gram-negative-rods","Gram-Negative Rods (Other than Enterobacteriaceae)","\u003Cp>Gram negative rods other than members of Enterobacteriaceae family such as  Pseudomonas, Acinetobacter and related organisms\u003C\u002Fp>",5,{"slug":345,"name":346,"description":347,"image":42,"body":42,"postCount":348},"gram-positive-rods","Gram-Positive Rods","Bacillus, Clostridium, Listeria, Corynebacterium, Actinomyces and related organisms",8,{"slug":350,"name":351,"description":352,"image":42,"body":42,"postCount":334},"mycobacteria","Mycobacteria","Mycobacterium tuberculosis, leprosy, atypical mycobacteria, and acid-fast organism diagnosis",{"slug":354,"name":355,"description":356,"image":42,"body":42,"postCount":334},"anaerobic-bacteriology","Anaerobic Bacteriology","Anaerobic organisms, anaerobic culture methods, and anaerobic infection diagnosis",{"slug":358,"name":359,"description":360,"image":42,"body":42,"postCount":334},"enterobacteriaceae","Enterobacteriaceae","Identification, differentiation, and clinical significance of Enterobacteriaceae family members",{"slug":362,"name":363,"description":364,"image":42,"body":42,"postCount":365},"spirochetes","Spirochetes","Treponema, Leptospira, Borrelia and spirochetal infections",7,{"slug":367,"name":368,"description":369,"image":42,"body":42,"postCount":328},"food-microbiology","Food Microbiology","Food-borne pathogens, food safety, spoilage, and preservation",{"slug":371,"name":372,"description":373,"image":42,"body":42,"postCount":374},"antimicrobial-susceptibility-testing","Antimicrobial Susceptibility Testing","Methods for testing antibiotic susceptibility in clinical microbiology",22,{"slug":376,"name":377,"description":378,"image":42,"body":42,"postCount":328},"antimicrobials-moa-amr","Antimicrobials (MOA & AMR)","Mechanisms, detection, and clinical significance of antimicrobial resistance",{"slug":380,"name":381,"description":382,"image":42,"body":42,"postCount":383},"sterilization-disinfection","Sterilization and Disinfection","Methods of sterilization and disinfection in healthcare and laboratory settings",10,{"slug":385,"name":386,"description":387,"image":42,"body":42,"postCount":388},"specimen-collection-transport","Specimen Collection and Transport","Collection, handling, and transport of clinical specimens for microbiological testing",27,{"slug":390,"name":391,"description":392,"image":42,"body":42,"postCount":393},"bacterial-structure-physiology","Bacterial Structure and Physiology","Bacterial cell structure, growth, physiology, and environmental factors affecting growth",21,{"slug":395,"name":396,"description":42,"image":42,"body":397,"postCount":287},"horizontal-gene-transfer","Horizontal Gene Transfer","Articles related to **Horizontal Gene Transfer**",{"slug":399,"name":400,"description":42,"image":42,"body":401,"postCount":383},"chromatography","Chromatography","Information about chromatographic techniques.",{"slug":403,"name":404,"description":405,"image":42,"body":406,"postCount":365},"electrophoresis","Electrophoresis","Information about Electrophoresis Techniques ","Detailed information  about Electrophoresis Techniques ",{"slug":408,"name":409,"description":410,"image":42,"body":411,"postCount":287},"pcr-techniques","PCR Techniques","Information about various types of Polymerase Chain Reaction Techniques ","More detailed information about various types of Polymerase Chain Reaction Techniques ",{"slug":413,"name":414,"description":415,"image":42,"body":42,"postCount":287},"bacteriophage","Bacteriophage","Description about Bacteriophage.",{"slug":417,"name":418,"description":419,"image":42,"body":42,"postCount":287},"malaria","Malaria","It is the collections of articles regarding malarial disease. ",{"slug":421,"name":422,"description":423,"image":42,"body":42,"postCount":287},"anaerobic-culture-techniques","Anaerobic Culture Techniques","Posts related with Anaerobic Culture Techniques.",{"slug":425,"name":426,"description":427,"image":42,"body":42,"postCount":393},"immunoassays","Immunoassays","You will get information about all the diagnostic tests that rely on the specific binding between an antigen and an antibody to detect or quantify a substance.",{"slug":429,"name":430,"description":431,"image":42,"body":42,"postCount":365},"biosafety-levels","Biosafety levels ","Articles related to Biosafety Levels",{"slug":433,"name":434,"description":435,"image":42,"body":42,"postCount":343},"environmental-factors","Environmental Factors ","In this case we are talking about growth requirements of microorganisms with deep dive in environmental factors that affect the growth. ",{"slug":437,"name":438,"description":439,"image":42,"body":42,"postCount":287},"pipette","Pipette","Posts related with Pipette. ",{"slug":441,"name":442,"description":443,"image":42,"body":42,"postCount":365},"bacteriology-mcqs","Bacteriology MCQs","This sections lists MCQs in Bacteriology.",{"slug":445,"name":446,"description":447,"image":42,"body":42,"postCount":448},"parasitology-mcqs","Parasitology MCQs","This section lists MCQs in Parasitology.",2,{"slug":450,"name":451,"description":452,"image":42,"body":42,"postCount":453},"virology-mcqs","Virology MCQs","This is the collections of Multiple Choice Questions in Virology.",4,{"slug":455,"name":456,"description":457,"image":42,"body":42,"postCount":458},"mcqs-in-microbiology","MCQs in Microbiology","This section lists the collections of Multiple Choice Questions in General Microbiology Topics. ",3,{"slug":460,"name":461,"description":462,"image":42,"body":42,"postCount":365},"immunology-mcqs","Immunology MCQs","In this section; we are posting collections of Multiple Choice Questions about Immunology. ",{"slug":464,"name":465,"description":466,"image":42,"body":42,"postCount":383},"microbial-curiosities","Microbial Curiosities","In this clusters, we are posting interesting and unique information about Microorganisms. ",{"slug":468,"name":469,"description":470,"image":42,"body":42,"postCount":471},"bacterial-culture-media","Bacterial Culture Media","Posts related to Bacterial Culture Media. ",23,{"slug":473,"name":474,"description":475,"image":42,"body":42,"postCount":287},"fungal-culture-media","Fungal Culture Media","Posts related to Fungal Culture Media.",{"slug":477,"name":478,"description":479,"image":42,"body":42,"postCount":343},"motility-test","Motility Test","This lists the procedure regarding various tests methods for bacterial motility.",{"slug":481,"name":482,"description":483,"image":42,"body":42,"postCount":383},"bacterial-enumeration","Bacterial enumeration","These posts are related to isolation and enumeration of bacteria. ",{"slug":485,"name":486,"description":487,"image":42,"body":42,"postCount":448},"gram-positive-coccobacillus","Gram-positive coccobacillus","List of Gram Positive Coccobacilli",{"slug":489,"name":490,"description":491,"image":42,"body":42,"postCount":453},"dimorphic-fungi","Dimorphic Fungi","This is about various dimorphic fungi. ",{"slug":493,"name":494,"description":495,"image":42,"body":42,"postCount":365},"bacterial-classification","Bacterial Classification","These posts are related with various approaches used for the classification of Bacteria. ",{"slug":497,"name":498,"description":499,"image":42,"body":42,"postCount":343},"immunofluorescence","Immunofluorescence ","Various Tests related to Immunofluorescence ",{"slug":501,"name":502,"description":503,"image":42,"body":42,"postCount":293},"antibody-mediated-immunity","Antibody-mediated Immunity","This clusters links the articles that are sharing insights about Antibody-mediated immunity. ",{"slug":505,"name":506,"description":507,"image":42,"body":42,"postCount":365},"hypersensitivity","Hypersensitivity","Articles related to Hypersensitivity.",{"slug":509,"name":510,"description":42,"image":42,"body":42,"postCount":458},"haemophilus","Haemophilus",{"slug":512,"name":513,"description":514,"image":42,"body":42,"postCount":287},"sexually-transmitted-infections-stis","Sexually transmitted infections (STIs)","This is the clusters of infections that are transmitted sexually. ",{"slug":516,"name":517,"description":518,"image":42,"body":42,"postCount":519},"adaptive-immunity","Adaptive Immunity","Blog posts related to B Cell Immunity and T Cell Immunity.",13,{"slug":521,"name":522,"description":523,"image":42,"body":42,"postCount":328},"fungal-diagnostics","Fungal Diagnostics","Various methods used for the Diagnosis of Fungal Infections. ",{"slug":525,"name":526,"description":527,"image":42,"body":42,"postCount":343},"laboratory-storage-and-preservation","Laboratory Storage and Preservation","Articles about Laboratory Storage of Antimicrobial Disk, Test organisms and Equipment used for this process. ",{"slug":529,"name":530,"description":531,"image":42,"body":532,"postCount":287},"laboratory-heating-equipment","Laboratory Heating Equipment","A guide to laboratory heating equipment, including hot plates, water baths, Bunsen burners, incubators, and dry baths, and how to choose the right one for each task.","Laboratory heating equipment covers the instruments that warm, melt, incubate, or sterilize samples and media in a microbiology laboratory. Each one delivers heat differently. \n\nA hot plate gives high, direct, dry heat; a water bath gives gentle, even, wet heat up to about 100°C; a Bunsen burner gives an open flame for rapid, very high heat; an incubator holds cultures at a steady temperature over hours or days; and a dry bath heats small tubes without water. Choosing the right one depends on the temperature you need, how precise it must be, and whether the sample can tolerate direct or open-flame heat.\n\nThe articles below cover each piece of heating equipment in detail, including its parts, working principle, uses, and the mistakes that most often go wrong at the bench.",{"slug":534,"name":535,"description":536,"image":42,"body":42,"postCount":293},"laboratory-glassware","Laboratory Glassware","Posts about Laboratory Glassware. ",{"slug":538,"name":539,"description":540,"image":42,"body":42,"postCount":293},"helminths","Helminths","In this section, we are covering properties, life cycle, pathogenesis and laboratory diagnosis of Helminths\u002FHelminthic infestations. ",{"slug":542,"name":543,"description":544,"image":42,"body":42,"postCount":287},"protozoan-parasite","Protozoan Parasite","In this cluster, we are covering protozoan parasites. ",{"slug":546,"name":547,"description":548,"image":42,"body":42,"postCount":298},"tests-for-gram-positive-cocci","Biochemical Tests for Gram Positive Cocci","This is the lists of Biochemical Tests that are used for Gram Positive Cocci. ",{"slug":550,"name":551,"description":552,"image":42,"body":42,"postCount":383},"bacterial-staining-technique","Bacterial Staining Technique","Lists of various staining techniques that are used to stain bacteria. ",{"slug":554,"name":555,"description":556,"image":42,"body":42,"postCount":393},"enzyme-tests","Enzyme Tests","\u003Cp>Various Biochemical Test that are based on enzymatic activity of the microorganisms. \u003C\u002Fp>",{"slug":558,"name":559,"description":560,"image":42,"body":42,"postCount":561},"carbohydrate-utilization","Carbohydrate Utilization","\u003Cp>Various biochemical tests which are related to Carbohydrate fermentation or Utilization\u003C\u002Fp>",11,{"slug":563,"name":564,"description":565,"image":42,"body":42,"postCount":343},"susceptibility-based-id","Susceptibility-based ID","\u003Cp>These are susceptibility based identification test such as optochin sensitivity, bacitracin sensitivity etc. \u003C\u002Fp>",{"slug":567,"name":568,"description":569,"image":42,"body":42,"postCount":453},"microbial-metabolism","Microbial Metabolism","\u003Cp>Tests about Microbial Metabolism. \u003C\u002Fp>",{"slug":571,"name":572,"description":573,"image":42,"body":42,"postCount":348},"substrate-utilization","Substrate Utilization","\u003Cp>The test in which a non-sugar carbon\u002Fnitrogen source is used or degraded (citrate, malonate, decarboxylases, indole, PAD).\u003C\u002Fp>",{"slug":575,"name":576,"description":577,"image":42,"body":42,"postCount":458},"atypical-pneumonia","Atypical Pneumonia","\u003Cp>Organisms responsible for Atypical Pneumonia. \u003C\u002Fp>",{"slug":579,"name":580,"description":581,"image":42,"body":42,"postCount":343},"antigen","Antigen","\u003Cp>Various articles related to Antigens.\u003C\u002Fp>",{"slug":583,"name":584,"description":585,"image":42,"body":42,"postCount":365},"innate-immunity","Innate Immunity","\u003Cp>Articles related to Innate Immunity. \u003C\u002Fp>",{"slug":587,"name":588,"description":589,"image":42,"body":42,"postCount":453},"respiratory-tract-infection","Respiratory Tract Infection","\u003Cp>In this cluster, you can see various etiological agents that causes respiratory tract infection. \u003C\u002Fp>",{"slug":591,"name":592,"description":593,"image":42,"body":42,"postCount":343},"torch-infection","TORCH Infection","\u003Cp>In this section; you can find articles related with TOCH infection. \u003C\u002Fp>",{"slug":223,"name":595,"description":596,"image":42,"body":42,"postCount":348},"Microbiology for Beginners","\u003Cp>These articles are very basic articles, which will share general concepts in Microbiology. \u003C\u002Fp>",{"slug":598,"name":599,"description":600,"image":42,"body":42,"postCount":287},"dna-replication","DNA Replication","\u003Cp>Articles related to DNA and Replication of DNA. \u003C\u002Fp>",{"slug":602,"name":603,"description":604,"image":42,"body":42,"postCount":365},"genetic-code","Genetic Code","\u003Cp>Articles related to Genetic Code.\u003C\u002Fp>",{"slug":606,"name":607,"description":608,"image":42,"body":42,"postCount":365},"molecular-technique","Molecular Technique","\u003Cp>Posts related to Molecular Techniques. \u003C\u002Fp>",{"slug":610,"name":611,"description":42,"image":42,"body":42,"postCount":298},"colorimetric-assay","Colorimetric Assay ",{"slug":613,"name":614,"description":615,"image":42,"body":42,"postCount":343},"pharmaceutical-microbiology","Pharmaceutical Microbiology","\u003Cp>Various articles related to Pharmaceutical Microbiology\u003C\u002Fp>",{"slug":617,"name":618,"description":42,"image":42,"body":42,"postCount":458},"blood-and-immune-cells","Blood and Immune Cells",{"slug":620,"name":621,"description":42,"image":42,"body":42,"postCount":343},"host-pathogen-interaction","Host Pathogen Interaction",{"slug":623,"name":624,"description":42,"image":42,"body":42,"postCount":453},"blood-culture","Blood Culture",{"slug":626,"name":627,"description":42,"image":42,"body":42,"postCount":453},"environmental-microbiology","Environmental microbiology ",{"slug":629,"name":630,"description":42,"image":42,"body":42,"postCount":365},"copromicroscopic-technique","Copromicroscopic Technique",{"slug":632,"name":633,"description":42,"image":42,"body":42,"postCount":458},"quality-control","Quality Control",{"slug":635,"name":636,"description":42,"image":42,"body":42,"postCount":365},"dermatophytes","Dermatophytes",{"slug":638,"name":639,"description":42,"image":42,"body":42,"postCount":458},"viral-hemorrhagic-fevers","Viral Hemorrhagic Fevers",{"slug":641,"name":642,"description":42,"image":42,"body":42,"postCount":453},"h2s-production","H2S Production",{"slug":644,"name":645,"description":42,"image":42,"body":42,"postCount":448},"water-quality-testing","Water Quality Testing",{"slug":647,"name":648,"description":42,"image":42,"body":42,"postCount":343},"virology-basics","Virology basics",{"slug":650,"name":651,"description":42,"image":42,"body":42,"postCount":453},"typing-methods","Typing Methods",{"slug":653,"name":654,"description":42,"image":42,"body":42,"postCount":458},"blotting-technique","Blotting Technique",{"slug":656,"name":657,"description":42,"image":42,"body":42,"postCount":453},"history-microbiology","History of Microbiology",{"slug":659,"name":660,"description":42,"image":42,"body":42,"postCount":287},"trematodes","Trematodes",{"slug":662,"name":663,"description":42,"image":42,"body":42,"postCount":453},"coccidian-parasites","Coccidian Parasites"]