Microbiology Mock Test 1

10%

Question 1 of 10

1. Which among the following acts as receptors for bacteriophage attachment in Gram-negative bacteria?

O antigens

Cilia

Lipid A

Teichoic acid

Question 1 of 10

Question 2 of 10

2. The correct order of taxonomic groups from higher to lower rank is?

Order—Class—Division—Family—Genus—Species

Kingdom—Division—Class—Order—Family—Genus—Species

Kingdom—Order—Division—Family—Class—Genus—Species

Kingdom—Order—Class—Family

Question 2 of 10

Question 3 of 10

3. Which type of force drives the flagellar motion?

ATP driven

Protonmotive and ATP driven

Protonmotive force

No protonmotive nor ATP driven

Question 3 of 10

Question 4 of 10

4. F pilus has a major role as ___________

human infection

attachment to host cell

port of entry of genetic material during mating

motility of the cell

Question 4 of 10

Question 5 of 10

5. On what factors do the intensity of secondary electrons depend upon?

shape of the irradiated object

chemical composition of the irradiated object

size and chemical composition of the irradiated object, number of electrons ejected and on the number of electrons reabsorbed by surrounding

number of electrons ejected

Question 5 of 10

Question 6 of 10

6. Poly-beta-hydroxybutyrate(PHB) present in aerobic bacteria can serve as?

a reserve carbon and energy source

acceptor of oxygen

provides buoyancy

a reserve source of phosphate

Question 6 of 10

Question 7 of 10

7. Peptidoglycan is made up of __________

N-acetylglucosamine, N-acetylmuramic acid

N-acetylglucosamine, N-acetylmuramic acid, amino acids

N-acetylmuramic acid

N-acetylglucosamine

Question 7 of 10

Question 8 of 10

8. In Gram-staining, iodine is used as a ______________

mordant

solublizer

stain

fixative

Question 8 of 10

Question 9 of 10

9. The secondary electrons radiated back in scanning microscope is collected by?

cathode

specimen

vacuum chamber

anode

Question 9 of 10

Question 10 of 10

10. For the examination of microbial cells we require the use of?

Low-power microscope

High-power microscope at a magnification of about 1,000 diameters

Low-power microscope at a magnification of about 1,000 diameters

High-power microscope

Question 10 of 10