2.2 Animal tissues, organs and organ systems

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Question 19
Medium70%

An investigation was carried out on two protease enzymes, Protease C and Protease D, to see how pH affects their rate of reaction.

Graph showing rate of reaction of Protease C and Protease D at different pH levels

a.

State the optimum pH for Protease D.

[1]
b.

Protease C is found in the human stomach. Explain why Protease C is suited to working in the stomach.

[2]
c.

Complete the sentences to explain why Protease C does not work at pH 6. 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