General Microbiology MCQs with Answers (11-21)

MCQ General Microbiology 11.

The average radius of the prokaryotic cells is:
a. 0.5-2.0 μm
b. 1.0-4.0 μm
c. 1.0-10.0 μm
d. 5.0-10.0 μm
e. 10.0-30.0 μm

MCQ General Microbiology 12.

While viewing the soil sample under the light microscope you will notice a rod-shaped cell devoid of a nucleus. The only correct assumption that can be made of the cell thus far is that:
a. It is a eukaryote
b. It is gram-positive
c. It contains peptidoglycan
d. It contains mitochondria
e. It is part of multicellular microorganisms

MCQ General Microbiology 13

Which of the following is likely to contain structures composed of N-acetylmuramic acid and N-acetylglucosamine:
a. Spheroplasts
b. Mycoplasmas
c. Escherichia coli 
d. Protoplasts
e. Amoebas

MCQ General Microbiology 14

The association  of endotoxin in Gram-negative bacteria is a result of the presence of:
a. Peptidoglycan
b. Lipopolysaccharide
c. Polypeptide
d. Steroids
e. Calcified proteins

MCQ General Microbiology 15

The reason that bacterial cells are more resistant to osmotic shock than are eukaryotic cells is that they:
a. Contain a cell wall composed of cellulose
b. Contain Osmo- regulating porins
c. Actively block water molecules from entering the cell
d. Are selectively permeable
e. Contain a cell wall composed of peptidoglycan

MCQ General Microbiology 16

Which of the following describes prokaryotic cell membrane?
a. Selectively permeable
b. Regulates passage of materials into and out of the cell
c. Contains proteins and phospholipids
d. Contains metabolic enzymes
e. All of these

MCQ General Microbiology 17

Bacterial fimbriae present on the outer cell surface are used for:
a. cellular activity
b. sexual reproduction
c. cell wall synthesis
d. adherence to surfaces
e. adherence, and exchange of genetic information.

MCQ General Microbiology 18

The use of antibiotics that inhibit or inactivate cellular ribosomes will result directly in the loss of which of the following functions:
a. ATP production
b. DNA replication
c. Phagocytosis
d.Protein synthesis
e. Cell division

MCQ General Microbiology 19

Chloroplasts are organelle that actively carries out photosynthesis. Which of the following is NOT a characteristic of them?
a. Are found in plant and algal cells
b. Contain the pigment chlorophyll
c. Are membrane-enclosed
d. Are found in photosynthetic prokaryotic cells
e. Are found only in eukaryotic cells

MCQ General Microbiology 20

Which of the following is true of phagocytosis?
a. Is not energy-dependent
b. Requires concentration gradient
c. Occurs in prokaryotic and eukaryotic cells
d. None of the above
e. A larger cell engulfs a smaller cell that will eventually be present in an internal vacuole.

MCQ General Microbiology 21

All of the following pertain to mitosis EXCEPT:
a. new cells receive one copy of each parent cell chromosome
b. Preceded by DNA replication
c. Results in gamete production
d. Spindle apparatus guides chromosome movement
e. Process of nuclear division.

Answer key of MCQs General Microbiology
11. (b)1.0-4.0 μm
12.(c)It contains peptidoglycan
13.(c)Escherichia coli
14.(b) Lipopolysaccharide
15.(e) Contain a cell wall composed of peptidoglycan
16. (c) It contains proteins and phospholipids
17. (d) adherence to surfaces
18. (d) Protein synthesis
19. (d) are found in photosynthetic prokaryotic cells
20. (e) A larger cell engulfs a smaller cell that will eventually be in an internal vacuole.
21. (c) Results in gamete production.

Acharya Tankeshwar

Hello, thank you for visiting my blog. I am Tankeshwar Acharya. Blogging is my passion. As an asst. professor, I am teaching microbiology and immunology to medical and nursing students at PAHS, Nepal. I have been working as a microbiologist at Patan hospital for more than 10 years.

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