During heavy physical exercise, anaerobic respiration in human muscle cells converts glucose into which substance, causi...
Type: MCQ • Marks: 1
During heavy physical exercise, anaerobic respiration in human muscle cells converts glucose into which substance, causing cramps?
Options
A. Ethanol
B. Lactic acid
C. Carbon dioxide only
D. Acetic acid
Explanation
When oxygen demand exceeds supply during intense exertion, muscle cells break down glucose anaerobically into lactic acid, leading to muscle fatigue and cramping.
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