Which of the following drug is used to treat fungal infections? a. erythromycin b. penicillin c. amphotericin B d. Quinine e. none of the above
Pili/fimbrae are thin short appendages extruding from the cytoplasmic membrane of certain bacteria. These pili/fimbriae are involved in a. movement b. attachment c. DNA transfer d. a and b e. b and c
What organism is considered an index of fecal pollution of drinking water supplies? a. Rotavirus b. E. coli c. Salmonella spp. d. Hepatitis E virus
Protective mechanisms used by bacteria to survive in the host maybe a. capsules b. M protein c. various enzymes d. all of the above
Endotoxins are heat stable lipopolysaccharide-protein complexes that form the structural components of the cell wall of bacteria. Which of the following statement regarding endotoxin is correct? a. all have the same effect regardless of bacterial source b. are found in both gram-positive and gram-negative bacterial cell wall c. are part of the cell wall of gram-positive bacteria only d. none of the above statements are correct
Ethanol is one of the most commonly used disinfectants. Which concentration of ethanol is most effective for this purpose? a. 100% b. 70% c. 50% d. 30%
Which of the following are reservoirs for human infection? a. food and water b. humans c. animals d. all of the above
A typical growth curveconsists of FOUR phases. Which is the correct sequence? a. exponential, lag, stationary, death b. lag, exponential, stationary, death c. stationary, exponential, lag, death d. lag, stationary, exponential, death
Which of the following are true about viruses? a. they are not composed of cells b. as virions they cannot metabolize nutrients c. they alone cannot reproduce themselves d. they contain DNA or RNA e. all of the above
The correct sequence for the viral life cycle is: a. attachment, biosynthesis, penetration, maturation, release b. penetration, biosynthesis, attachment, maturation, release c. attachment, penetration, biosynthesis, maturation, release d. biosynthesis, attachment, penetration, maturation, release
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.