Question detail
A student is revising Respiration. Which statement would help them apply oxygen debt correctly?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Respiration
Question
- A. (HT only) oxygen debt is the extra oxygen needed after exercise to react with accumulated lactic acid and remove it from cells.
- B. (HT only) oxygen debt is not the extra oxygen needed after exercise to react with accumulated lactic acid and remove it from cells.
- C. Students often confuse oxygen debt with the amount of oxygen consumed during exercise, rather than understanding it as the extra oxygen required post-exercise to clear lactic acid.
- D. The biology in this objective should be kept separate from Response to exercise.
Answer
The most accurate choice is (HT only) oxygen debt is the extra oxygen needed after exercise to react with accumulated lactic acid and remove it from cells. It avoids the common misconception that often appears when students answer too generally.
Explanation
This analysis question is looking for the option that stays accurate when other statements drift into misconception. The strongest choice is (HT only) oxygen debt is the extra oxygen needed after exercise to react with accumulated lactic acid and remove it from cells. because it reflects the intended meaning of the learning objective. This helps reinforce your understanding of the concept and prepares you to explain it effectively in the exam. This keeps revision aligned with the approved learning objective on define (HT only) oxygen debt as the extra oxygen needed after exercise to react with accumulated lactic acid and remove it from cells.
Common mistake
Misunderstanding Oxygen Debt
Students often confuse oxygen debt with the amount of oxygen consumed during exercise, rather than understanding it as the extra oxygen required post-exercise to clear lactic acid.
Clarify that oxygen debt specifically refers to the additional oxygen needed after exercise to metabolize lactic acid that has built up in the muscles.
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