Chemistry

General Science (CDS)

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A sprinter feels cramps and pain in the thigh muscles after a run. This is due to accumulation of

This questions was previously asked in

2023 CDS -1 GK

lactic acid

CO₂

pyruvic acid

ethanol

- When a sprinter runs, their muscles may not get enough oxygen to support aerobic respiration.

- Lactic Acid: This is produced during anaerobic respiration when oxygen is scarce, causing muscle cramps and pain. Correct Answer

- CO₂: Carbon dioxide is a byproduct of aerobic respiration and doesn't accumulate to cause cramps.

- Pyruvic Acid: It's an intermediary in glycolysis and converts to lactic acid in anaerobic conditions but doesn't accumulate itself.

- Ethanol: This is not involved in muscle metabolism in humans.