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1.3 Enzymes

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Question 11
H

Seeds contain stores of starch, lipids and proteins. When a seed germinates, enzymes break down these stores so that the seedling can grow.

a.

Explain the importance of enzymes in a germinating seed.

[4]
b.

Seeds germinate more slowly at 5 ∘C5\ ^{\circ}\text{C}5 ∘C than at 20 ∘C20\ ^{\circ}\text{C}20 ∘C.

Explain why.

[2]
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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