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1.3 Enzymes

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Question 30
H

An enzyme completely breaks down 6 mg of substrate in 40 s in test P. It completely breaks down 12 mg of the same substrate in 120 s in test Q.

What is the ratio of the mean rate in Q to the mean rate in P?

[1]
A

3:23:23:2

B

1:31:31:3

C

2:32:32:3

D

2:12:12:1

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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