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1.3 Respiration

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Question 12
F

Look at the Figure. It shows three large molecules, A, B and C.

Figure

image

a.

Which molecule, A, B or C, is a protein?

[1]
b.

Molecule A is made of many glucose molecules joined together.

Name one carbohydrate that molecule A could be.

[1]
c.

A student says:

'All three molecules are polymers.'

Explain why the student is wrong.

[2]
d.

Molecule A is broken down into glucose in the digestive system.

Explain why molecule A must be broken down into glucose before the body can use it.

[2]
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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