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SingaporeCombined ScienceQuick questions
Biology: Cells and Human Physiology
Quick questions on Respiration and gas exchange in humans explained: O-Level Combined Science
5short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What is aerobic respiration?Show answer
Aerobic respiration uses oxygen and releases a large amount of energy:
What is anaerobic respiration?Show answer
Anaerobic respiration happens without oxygen and releases much less energy per glucose molecule. In human muscle during hard exercise it produces lactic acid:
What is q1?Show answer
Write the word equation for aerobic respiration. [2 marks]
What is q2?Show answer
State two differences between aerobic and anaerobic respiration in human muscle. [2 marks]
What is q3?Show answer
Explain how the large number of alveoli helps gas exchange. [2 marks]
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