Help with the Krebs Cycle

Practice Questions

GRE Subject Test: Biochemistry, Cell, and Molecular Biology › Help with the Krebs Cycle

Questions
10
1

Each of the following enzymes is utilized in the citric acid cycle, except __________.

2

How many total molecules of NADH are produced from 2 glucose molecules during cellular respiration?

3

In what organ does gluconeogenesis primarily occur in vertebrates?

4

A researcher adds an enzyme inhibitor that drastically slows down the progression of the Krebs cycle. What additional things will the researcher observe?

I. There will be a buildup of alpha-ketoglutarate

II. The molecule inhibits isocitrate dehydrogenase

III. The molecules in the Krebs cycle will be stuck in a five-carbon intermediate

5

Which of the following is not created in the Kreb's cycle?

6

Which of the following molecules stimulates the enzyme isocitrate dehydrogenase in the Krebs cycle?

7

For a given molecule of glucose, Krebs cycle produces __________ the amount of NADH and __________ amount of ATP as glycolysis.

8

Which molecule is regenerated by the Krebs cycle in order to accept the next acetyl-CoA?

9

Pyruvate from glycolysis must be converted to what before starting the Krebs cycle?

10

Which of the following is true regarding the initial reaction of the Krebs cycle?

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