Biology NEET Full Syllabus Mock Test 180 Questions New Syllabus Mock Test - 11 PCB Single Correct MCQ
Published on: August 21, 2026

A person starts doing exercise. Initially, his muscle cells produce energy efficiently, but after about 1 hour he begins to feel muscle fatigue. What is the expected net ATP produced per glucose molecule in his muscle cells:
→ Initially
→ During fatigue

A
Initially -2 ATP; During fatigue -38 ATP
B
Initially - 38 ATP; During fatigue - 2 ATP
C
Initially - 36 ATP; During fatigue - 0 ATP
D
Initially - 2 ATP; During fatigue - 2 ATP

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Text Solution

Verified by Experts
The correct answer is:
B

There is a net gain of 38 ATP molecules during aerobic respiration of one molecule of glucose. In fermentation there is a net gain of only two molecules of ATP for each molecule of glucose degraded to pyruvic acid whereas many more molecules of ATP are generated under aerobic conditions.

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