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9.4 Microbial Physiology Module 9: Metabolism

Total questions: 10

Worksheet time: 5mins

Name
Class
Date
1.

Which of the following reactions is involved in the conversion of pyruvate to acetyl coenzyme A?

a)

oxidative phosphorylation

b)

oxidative deamination

c)

oxidative decarboxylation

d)

oxidative transamination

2.

Which of the following gases is a by-product of the reaction between pyruvate and coenzyme A?

a)

CO

b)

CO2

c)

O2

d)

none of these

3.

Which of the following carbohydrates cannot enter the glycolytic pathway?

a)

Fructose

b)

Galactose

c)

Glycogen

d)

None of these

4.

Which of the following compounds is required to convert glyceraldehyde 3-phosphate to 1,3-bisphosphoglycerate?

a)

ADP

b)

ATP

c)

NADH

d)

NAD+

5.

How many molecules of FADH2 are obtained for each acetyl CoA molecule that enters the common catabolic pathway?

a)

1

b)

2

c)

3

d)

4

6.

How many molecules of ATP are produced during the conversion of two molecules of 1,3-bisphosphoglycerate to yield two molecules of pyruvate?

a)

2

b)

4

c)

6

d)

12

7.

Which of the following acts as the oxidizing agent in the conversion of pyruvate to acetyl coenzyme A?

a)

ATP

b)

NAD+

c)

NADH

d)

Pyruvate

8.

Which of the following gases is a by-product of the reaction between pyruvate and coenzyme A?

a)

CO

b)

CO2

c)

O2

d)

none of these

9.

Which of the following statements is true of anaerobic reactions?

a)

They are all redox reactions.

b)

They are all oxidation reactions.

c)

They occur in the presence of oxygen.

d)

They occur in the absence of oxygen.

10.

What is the effect of excess ATP on glycolysis?

a)

It enhances the rate of glycolysis.

b)

It moderately reduces the rate of glycolysis.

c)

It shuts down glycolysis.

d)

It has no effect on glycolysis.