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CAIE A-Level Biology AS 3.2.3 Reversible Inhibitors Questions

Explain reversible inhibition by relating inhibitor binding to changes in enzyme activity and kinetic evidence.

Syllabus
2028–2030
Course
Biology 9700
Level
AS

Exam points

  • Explain how reversible inhibitors reduce enzyme activity and interpret their effects on enzyme kinetics.

CAIE A-Level Biology AS 3.2.3 Reversible Inhibitors Questions question 1

[Maximum number: 1]

The effect of substrate concentration on an enzyme-catalysed reaction was measured in three different conditions:
- without an inhibitor
- with a competitive inhibitor
- with a non-competitive inhibitor.

The graph shows the results.

Figure for Question CAIE A-Level Biology AS 3.2.3 Reversible Inhibitors Questions question 1 — CAIE A-Level Biology AS

Which row is correct?

without an inhibitor

with a competitive inhibitor

with a non-competitive inhibitor

1

2

3

1

3

2

3

1

2

3

2

1

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