Question 41 During the citric acid cycle, oxygen is a vital component for ATP pr

Question

Question 41

During the citric acid cycle, oxygen is a vital component for ATP production.

True

False

Question 50

Glucose is necessary for fatty acid oxidation because...

its derivative, pyruvate, is condensated with carbonic acid to form oxaloacetate, which in turn is a necessary carbon compound in the citric acid cycle

it is needed to convert fatty acids to fatty acyl-CoA which in turn is oxidized to acetyl CoA

glucose is decarboxylated into cytochrome oxidase which is a necessary intermediate in the citric acid cycle

its derivative, acetyl CoA, is condensated with carbonic acid to form lactase, which in turn is a necessary carbon compound in the citric acid cycle

Question 56

During a starvation state protein can be degraded for energy use during exercise by breaking down amino acids into which of the following?

A.

Acetyl-CoA

B.

Krebs cycle intermediates

C.

Pyruvate

D.

All of the above

E.

B and C only

Question 57

A person exercises in their “fat burning zone” for 4 hours at 35% VO2peak. The O2 cost of exercise at that work rate is 0.5L/minute. Following exercise the subject rewards himself with an ice-cream sundae (700kcal). The following statement is true(assume 5kcal/lit of O2):

A.

The subject is in neutral energy balance

B.

The subject consumed fewer calories than they expended during exercise

C.

The subject consumed more calories than they expended during exercise

D.

Can’t say

its derivative, pyruvate, is condensated with carbonic acid to form oxaloacetate, which in turn is a necessary carbon compound in the citric acid cycle

it is needed to convert fatty acids to fatty acyl-CoA which in turn is oxidized to acetyl CoA

glucose is decarboxylated into cytochrome oxidase which is a necessary intermediate in the citric acid cycle

its derivative, acetyl CoA, is condensated with carbonic acid to form lactase, which in turn is a necessary carbon compound in the citric acid cycle

Explanation / Answer

Question 41
During the citric acid cycle, oxygen is a vital component for ATP production.
The answer is False.

In aerobic respiration, the oxygen acts as a final electron acceptor, which involves in the last step of aerobic respiration i.e. Elctron Transport System. Hence the answer is False.

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