Question detail
Which statement correctly compares energy transfer in aerobic and anaerobic respiration?
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. Aerobic respiration transfers much more energy from glucose than anaerobic respiration.
- B. Anaerobic respiration transfers more energy than aerobic respiration.
- C. Both types of respiration transfer exactly the same amount of energy.
- D. Aerobic respiration transfers no energy because oxygen is present.
Answer
Aerobic respiration transfers much more energy from glucose than anaerobic respiration. Aerobic respiration transfers much more energy from glucose than anaerobic respiration because aerobic respiration breaks glucose down more completely.
Explanation
The correct option is: Aerobic respiration transfers much more energy from glucose than anaerobic respiration. Aerobic respiration fully oxidises glucose and transfers more energy. Anaerobic respiration is incomplete, so it transfers much less energy. The distractors either reverse the oxygen/product/energy relationship or claim both types of respiration are the same, which is not accurate for AQA GCSE Biology.
Common mistake
Energy Transfer Comparison Mistake
Students often confuse the relative amounts of energy transferred in aerobic and anaerobic respiration, mistakenly believing they are the same.
Remember that aerobic respiration transfers significantly more energy than anaerobic respiration due to the complete oxidation of glucose in the presence of oxygen.
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