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1 markCellular Respiration and ATP Synthesis

CAPE Biology Unit 2 · 2003 · Paper 1 · Question 2(a)(i)

Overview of glycolysis, fate of reduced NAD (NADH2) under aerobic and anaerobic conditions in animals and plants, and recycling of NAD.

State which molecule accepts the 2H from NADH2 during anaerobic respiration in animals.

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Other parts of this question

  1. 2(a)(ii)State the product of anaerobic respiration in animals.[1 mark]
  2. 2(a)(iii)State TWO products produced under similar anaerobic conditions in plants.[2 marks]
  3. 2(b)In animals, explain what happens to the product formed during anaerobic respiration when oxygen becomes available again.[2 marks]
  4. 2(c)Suggest TWO reasons for this decline in yeast population.[2 marks]
  5. 2(d)State TWO advantages of using natural enzymes rather than an inorganic catalyst to catalyse the breakdown of carbohydrate solutions.[2 marks]

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