CAPE Biology Unit 1 · 2007 (Specimen) · Paper 1 · Question Q14

Item 14 refers to the graph below which shows the rate of an enzyme catalysed reaction with and without inhibitors. Which of the following sequences describes the types of reaction shown by Graphs I, II and III?

1. (A)Graph I: Competitive inhibitor; Graph II: Non-competitive inhibitor; Graph III: No inhibitor
2. (B)Graph I: Competitive inhibitor; Graph II: No inhibitor; Graph III: Non-competitive inhibitor
3. (C)Graph I: No inhibitor; Graph II: Competitive inhibitor; Graph III: Non-competitive inhibitor
4. (D)Graph I: No inhibitor; Graph II: Non-competitive inhibitor; Graph III: Competitive inhibitor

This question uses a figure or table from the paper — you'll see it when you practise.