Question 1

Which of the following structures is primarily responsible for bacterial chemotaxis?

Accepted Answer

Flagella

Question 2

A competitive inhibitor affects enzyme activity by:

Accepted Answer

Binding to the active site and blocking substrate access

Question 3

Which statement best describes the bacterial glycocalyx capsule?

Accepted Answer

It is a firmly attached, rigid layer that can increase virulence.

Question 4

Endospores are formed by bacteria primarily to:

Accepted Answer

Survive harsh environmental conditions

Question 5

Which of the following is NOT a function of bacterial pili?

Accepted Answer

Energy storage

Question 6

What is the main difference between competitive and non-competitive enzyme inhibition?

Accepted Answer

Competitive inhibitors bind to the active site, while non-competitive inhibitors bind elsewhere.

Question 7

Which of the following is true about bacterial chromosomes?

Accepted Answer

They are circular and contain essential genes.

Question 8

A bacterium is found to have magnetosomes. What is the most likely function of these inclusions?

Accepted Answer

Orientation to Earth's magnetic field

Question 9

Which of the following statements about Archaea is correct?

Accepted Answer

They possess pseudopeptidoglycan in their cell walls.

Question 10

If a bacterium is placed in a nutrient-rich environment, which inclusion is most likely to increase in abundance?

Accepted Answer

Poly-B-hydroxybutyric acid (PHB)

Question 11

Which equation best represents the net ATP yield from aerobic respiration of one glucose molecule in bacteria?

Accepted Answer

$$\approx 38 	ext{ ATP}$$

Question 12

A scientist increases the substrate concentration in a reaction with a competitive inhibitor present. What is the expected effect?

Accepted Answer

The inhibitor's effect will be overcome and reaction rate will increase.

Question 13

Which of the following is a function of bacterial fimbriae?

Accepted Answer

Adhesion to surfaces

Question 14

Which of the following is a correct comparison between prokaryotic and eukaryotic cells?

Accepted Answer

Eukaryotes have a nucleus; prokaryotes do not.

Question 15

Which of the following is NOT a role of the bacterial glycocalyx?

Accepted Answer

Protein synthesis

Question 16

Which of the following best describes the function of bacterial inclusions?

Accepted Answer

Energy or resource reservoirs

Question 17

Which of the following is true about enzymes?

Accepted Answer

They lower the activation energy of reactions.

Question 18

A bacterium with a thick, rigid glycocalyx is likely to:

Accepted Answer

Be more resistant to phagocytosis

Question 19

Which of the following is a correct statement about bacterial ribosomes?

Accepted Answer

They are 70S and composed of a 30S and 50S subunit.

Question 20

Which metabolic pathway yields the least ATP per glucose molecule in bacteria?

Accepted Answer

Fermentation

Microbe Anatomy and Metabolism: Study Notes for Anatomy & Physiology

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