Reactants and Products of the Citric Acid Cycle

Practice Questions

Biochemistry › Reactants and Products of the Citric Acid Cycle

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1

The first reaction of the citric acid cycle is an aldol condensation involving which two molecules?

2

Which of the following steps within the citric acid cycle results in the production of a molecule of carbon dioxide ?

3

What is the role of isocitrate dehydrogenase in the citric acid cycle of the mitochondria?

4

Which process involved in cellular respiration produces the largest quantity of high energy electron carriers?

5

The pyruvate dehydrogenase complex creates acetyl-CoA from pyruvate. What other molecule is a product of this reaction?

6

Which of the following molecules involved in the citric acid cycle initiates the cycle by combining with acetyl-CoA?

7

In what part of the cell does the pyruvate dehydrogenase complex function?

8

Which of the following is true regarding the citric acid cycle?

9

From a single molecule of glucose, two molecules of pyruvate are formed which can be converted into twoacetyl-CoA molecules to enter the citric acid cycle.

Starting from a single molecule of glucose, how many molecules of NADH are formed in a single turn of the citric acid cycle including the conversion of pyruvate into acetyl-CoA? Do not include NADH formed during glycolysis, which is not part of the citric acid cycle.

10

Which of these molecules is not a product of the citric acid cycle?

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