How is muscle pain during heavy exercise related to lactic acid?
Answer and explanation
Correct answer: Anaerobic respiration during oxygen shortage can form lactic acid
The governing concept is anaerobic respiration in working muscles. During strenuous exercise, oxygen delivery may temporarily be insufficient for the energy demand. Muscle cells then obtain some energy by anaerobically breaking down glucose, producing lactic acid. Its temporary accumulation is associated with fatigue and discomfort. Option A is correct; B, C and D describe unrelated or impossible events.
Frequently asked questions
What is the correct answer to this question?
Anaerobic respiration during oxygen shortage can form lactic acid
Why is this the correct answer?
The governing concept is anaerobic respiration in working muscles. During strenuous exercise, oxygen delivery may temporarily be insufficient for the energy demand. Muscle cells then obtain some energy by anaerobically breaking down glucose, producing lactic acid. Its temporary accumulation is associated with fatigue and discomfort. Option A is correct; B, C and D describe unrelated or impossible events.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Life Processes. Topic: Respiration.
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