Question detail
Which statement correctly compares aerobic and anaerobic respiration by oxygen requirement?
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 requires oxygen, while anaerobic respiration happens without oxygen.
- B. Both aerobic and anaerobic respiration require oxygen to release energy.
- C. Anaerobic respiration requires oxygen, while aerobic respiration does not.
- D. Neither aerobic nor anaerobic respiration involves oxygen in GCSE Biology.
Answer
Aerobic respiration requires oxygen, while anaerobic respiration happens without oxygen. That is the direct comparison required by this learning objective.
Explanation
The correct option is: Aerobic respiration requires oxygen, while anaerobic respiration happens without oxygen. Aerobic respiration uses oxygen to fully oxidise glucose. Anaerobic respiration takes place without oxygen, so oxygen requirement is the key difference being tested. 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
Oxygen Requirement Confusion
Students often confuse the oxygen requirements of aerobic and anaerobic respiration, mistakenly stating that both processes require oxygen.
Emphasize that aerobic respiration requires oxygen, while anaerobic respiration occurs without oxygen. Use diagrams to illustrate the differences clearly.
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