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1.3 Enzymes

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Question 1
F

The Figure shows the effect of temperature on the rate of an enzyme-controlled reaction.

Figure

image

a.

Give the optimum temperature for this enzyme.

[1]
b.

Explain why the rate of reaction increases between 10 ∘C10\ ^{\circ}\text{C}10 ∘C and 40 ∘C40\ ^{\circ}\text{C}40 ∘C.

[2]
c.

Explain why the rate of reaction is zero at 60 ∘C60\ ^{\circ}\text{C}60 ∘C.

[3]
Markscheme

1.3 Enzymes Questions

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

44 exam-style questions on Edexcel GCSE Biology 1.3 Enzymes, covering 1.3.1 Mechanism of enzyme action, 1.3.2 Denaturation of enzymes, 1.3.3 Factors affecting enzyme activity, and 1.3.4 Measuring energy in food by calorimetry. Each one has a worked solution and a mark scheme showing where the marks go.

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