First slide

Aerobic Respiration

Question

How many reduced coenzymes are produced during the aerobic breakdown of a molecule of pyruvic acid through Krebs' cycle?

Easy

A

3 NADH₂, 1 FADH₂
B

2 NADH₂, 1 FADH₂
C

4 NADH₂, 2 FADH₂
D

5 NADH₂, 1 FADH₂.

Solution

Reduced coenzymes include NADH + H⁺ and FADH₂.There are three points in the kreb cycle or TCA cycle where NAD⁺ is reduced to NADH + H⁺and one point where FAD⁺ is reduced to FADH₂.

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