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Question 18N.3.hl.TZ0.8c

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Date November 2018 Marks available [Maximum mark: 4] Reference code 18N.3.hl.TZ0.8c
Level hl Paper 3 Time zone TZ0
Command term Compare and contrast Question number c Adapted from N/A
c.
[Maximum mark: 4]
18N.3.hl.TZ0.8c

Enzymes are mainly globular proteins.

(c)

Contrast the actions of non-competitive and competitive inhibitors of an enzyme and state their effects on the maximum rate of reaction, Vmax, and the Michaelis–Menten constant, Km.

[4]

Markscheme

 

Award [1] for each action.

Award [1] for any two effects stated correctly.

Award [2 max] if both actions and effects are switched to incorrect inhibitor types.

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