alleryWhich substance is the final electron acceptor in aerobic respiration?
AHydrogen forming molecular hydrogen
BCarbon dioxide forming carbonate
COxygen forming water
DNitrogen forming ammonium ion
Answer & Solution
Correct answer: C. Oxygen forming water
1. The chapter shows oxygen combines with hydrogen at the end of respiration.
2. Hydrogen comes from glucose breakdown via NADH.
3. Oxygen accepts the electrons and joins hydrogen to form water.
4. So option A is correct.
_Source: Selina Concise Biology Class 9, Ch 7 Respiration in Plants (Mistral OCR'd PDF), section on aerobic respiration_
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