2.2 Animal tissues, organs and organ systems

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Question 13
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An investigation was carried out on two digestive protease enzymes, Enzyme P and Enzyme Q, to determine how pH affects their rate of reaction.

A graph showing the rate of reaction for Enzyme P and Enzyme Q at different pH values.

a.

State the optimum pH for Enzyme Q.

[1]
b.

Enzyme P is active in the human stomach. Explain why Enzyme P is highly suited to the environment of the stomach.

[2]
c.

Complete the sentences to explain why Enzyme Q does not function at pH 11.5. Choose words from the following list:

  • active site
  • catalyst
  • membrane
  • substrate
  • product

The part of the enzyme that changes shape is the ______.

The change in shape means the enzyme cannot bind to the ______.

[2]

2.2 Animal tissues, organs and organ systems Questions

  1. GCSE
  2. /Biology
  3. /2.2 Animal tissues, organs and organ systems