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9.2 Microbial Physiology Module 9: Metabolism

Total questions: 10

Worksheet time: 5mins

Name
Class
Date
1.

Which type of linkage is present between any two phosphate groups in ATP?

a)

An anhydride linkage

b)

An ester linkage

c)

An ether linkage

d)

None of these

2.

What is a unique feature of the Entner-Doudoroff pathway?

a)

It bypasses glycolysis entirely.

b)

It generates more ATP than glycolysis.

c)

It produces both NADPH and NADH.

3.

Which of the following statement is true of FAD and FADH2?

a)

FAD is the oxidized form, and FADH2 is the reduced form.

b)

FAD is the reduced form, and FADH2 is the oxidized form.

c)

The conversion of FAD to FADH2 is an addition reaction.

d)

The conversion of FAD to FADH2 is a condensation reaction.

4.

Which of the following are transported by NAD+ and FAD coenzymes?

a)

Electrons

b)

Hydrogen Ions

c)

Both electrons and hydrogen ions

d)

Neither electrons nor hydrogen ions

5.

Which organisms typically use the Entner-Doudoroff pathway?

a)

Mammals

b)

Obligate anaerobes

c)

Bacteria such as Pseudomonas and Zymomonas

d)

Fungi

6.

What role does ribose-5-phosphate play in the cell?

a)

Used in glycolysis

b)

Forms ATP

c)

Precursor for nucleotide synthesis

d)

Oxidized to pyruvate

7.

Which of the following is the starting compound of the citric acid cycle?

a)

Acetyl CoA

b)

Oxaloacetate

c)

Isocitrate

d)

Succinyl CoA

8.

Which of the following is the correct sequence of reactions that occur during the conversion of citrate to isocitrate?

a)

dehydration followed by hydration

b)

hydration followed by dehydration

c)

oxidation followed by reduction

d)

reduction followed by oxidation

9.

How many molecules of CO2 are released at the end of the citric acid cycle?

a)

One

b)

Two

c)

Three

d)

Four

10.

Which of the following are needed to convert fructose 6-phosphate to fructose 1,6-bisphosphate?

a)

phosphofructokinase and Ca2+

b)

phosphofructokinase, ADP, and Ca2+

c)

phosphofructokinase, ADP, and Mg2+

d)

phosphofructokinase, ATP, and Mg2+