Q: Which equation correctly represents the hydrolysis of ATP?

$ \mathrm{ATP} \rightarrow \mathrm{ADP} + \mathrm{P}_i + \text{ENERGY} $

Q: Which equation represents the net reaction of aerobic respiration of glucose?

$ \mathrm{C}_6\mathrm{H}_{12}\mathrm{O}_6 + 6\mathrm{O}_2 \rightarrow 6\mathrm{CO}_2 + 6\mathrm{H}_2\mathrm{O} + \text{ENERGY} $

Question 1

Which of the following best describes catabolism in microbial metabolism?

Accepted Answer

The breakdown of complex molecules into small molecules with the release of energy

Question 2

What is the primary role of ATP in cellular metabolism?

Accepted Answer

It serves as the energy currency for metabolic processes

Question 3

Which equation correctly represents the hydrolysis of ATP?

Accepted Answer

$ \mathrm{ATP} ightarrow \mathrm{ADP} + \mathrm{P}_i + 	ext{ENERGY} $

Question 4

Which process uses light energy to generate ATP in microbes?

Accepted Answer

Photophosphorylation

Question 5

During glycolysis, which molecule is the primary source of reducing power?

Accepted Answer

NADH

Question 6

Which of the following statements about enzymes is TRUE?

Accepted Answer

Enzymes lower the activation energy and remain unchanged after the reaction

Question 7

A competitive inhibitor affects an enzyme by:

Accepted Answer

Filling the active site and preventing substrate binding

Question 8

Which molecule acts as a coenzyme in redox reactions during metabolism?

Accepted Answer

NAD$^+$

Question 9

In the electron transport chain, what is the main function of cytochromes?

Accepted Answer

To transfer electrons between protein complexes

Question 10

Which of the following is TRUE about fermentation in microbes?

Accepted Answer

It regenerates NAD$^+$ from NADH and does not use the electron transport chain

Question 11

Which equation represents the net reaction of aerobic respiration of glucose?

Accepted Answer

$ \mathrm{C}_6\mathrm{H}_{12}\mathrm{O}_6 + 6\mathrm{O}_2 ightarrow 6\mathrm{CO}_2 + 6\mathrm{H}_2\mathrm{O} + 	ext{ENERGY} $

Question 12

Which metabolic pathway is amphibolic, meaning it can function in both catabolic and anabolic directions?

Accepted Answer

Krebs cycle

Question 13

What is the role of ATP synthase in cellular respiration?

Accepted Answer

It uses the proton gradient to synthesize ATP from ADP and phosphate

Question 14

Which process is responsible for the breakdown of fatty acids into acetyl-CoA?

Accepted Answer

Beta oxidation

Question 15

Sulfanilamide inhibits bacterial growth by:

Accepted Answer

Competing with PABA for the active site of the enzyme that synthesizes folic acid

Question 16

Which of the following is NOT a type of electron carrier in the electron transport chain?

Accepted Answer

Proteases

Question 17

During substrate-level phosphorylation, how is ATP generated?

Accepted Answer

By transferring a phosphate group from an organic molecule directly to ADP

Question 18

Which pathway produces phosphorylated five-carbon sugar intermediates for biosynthesis?

Accepted Answer

Pentose phosphate pathway

Question 19

A patient is diagnosed with lactic acidosis after strenuous exercise. Which metabolic process is most likely responsible for the accumulation of lactic acid?

Accepted Answer

Fermentation

Question 20

Which of the following best explains why enzymes are highly specific for their substrates?

Accepted Answer

Enzymes have active sites that are complementary in shape to their specific substrates

Microbial Metabolism: Key Concepts and Pathways

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