IB Biology HL 8.1.10 Enzyme catalysis Question Bank
Practise IB Biology HL 8.1.10 by interpreting energy profiles and explaining how enzyme binding lowers the activation barrier.
- Syllabus
- First assessment 2025
- Course
- Biology HL
- Level
- HL
Exam points
- Interpret energy-profile graphs to identify catalysed activation energy and unchanged reactant/product energies.
- Explain how enzyme-substrate binding lowers the activation barrier without altering reaction equilibrium.
C1.1.10—Effect of enzymes on activation energy question 1
(a) The image shows a cell in a section of an onion root tip seen under a light microscope.
The graph shows energy levels throughout an uncatalysed reaction. Draw a curve to show how the action of an enzyme would affect this reaction.
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