Multiple Choice
What happens to the acetyl-CoA that is produced from pyruvate during cellular respiration?
24. Metabolism and Nutrition
Cellular Respiration: Pyruvate Oxidation
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How many molecules of NADH are produced per glucose molecule during the preparatory reaction of pyruvate oxidation?
A
3 NADH
B
2 NADH
C
4 NADH
D
1 NADH
Verified step by step guidance1
Understand that pyruvate oxidation is a part of cellular respiration where each glucose molecule is split into two pyruvate molecules during glycolysis.
Recognize that each pyruvate molecule undergoes the preparatory reaction, also known as the link reaction, before entering the citric acid cycle.
During the preparatory reaction, each pyruvate is converted into acetyl-CoA. This process involves the reduction of NAD+ to NADH.
Since one glucose molecule produces two pyruvate molecules, the preparatory reaction occurs twice for each glucose molecule.
Therefore, for each glucose molecule, two molecules of NADH are produced during the preparatory reaction of pyruvate oxidation.
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