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1.3 Respiration

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Question 12

A person is asleep. Their heart continues to beat.

a.

Name the molecule made during respiration that supplies energy for heart muscle contraction.

[1]
b.

Give one reason why the heart muscle cells cannot rely on a store of the molecule you named in (a) while the person is asleep.

[1]
Markscheme

1.3 Respiration Questions

  1. GCSE
  2. /Biology
  3. /1.3 Respiration

113 exam-style questions on OCR GCSE Biology 1.3 Respiration, covering 1.3.1 Cellular respiration supplies ATP, 1.3.2 Aerobic and anaerobic respiration, 1.3.3 Sugars and carbohydrates, 1.3.4 Amino acids and proteins, and 1.3.5 Fatty acids and lipids. Each one has a worked solution and a mark scheme showing where the marks go.

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