CAIE IGCSE Biology 5.1.4 Active Sites & Enzyme Action
Practise explaining substrate binding, enzyme-substrate complex formation and product release through active-site shape.
- Syllabus
- 2026–2028
- Course
- Biology 0610
Exam points
- identify the active site, substrate, enzyme-substrate complex and products on a reaction diagram
- state that the active site's shape is complementary to the substrate
- explain that binding enables product formation before unchanged enzyme molecules can act again
5.1.4—Enzyme action with reference question 1
[Maximum number: 1]
Which statement is correct?
A
The active site of an enzyme has the same shape as the substrate.
B
The active site is not affected by changes in temperature.
C
The shape of the active site of an enzyme is complementary to its substrate.
D
The substrate and product combine at the active site.
C
All question bank results loaded