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IB Biology HL C1.1.14 Hl Allosteric Sites and Non Competitive Inhibition Questions

Practise IB Biology HL 1.1.14 by applying allosteric sites and non-competitive inhibition concepts to exam questions.

Syllabus
First assessment 2025
Course
Biology HL
Level
HL

Exam points

  • Define an allosteric site as a site separate from the active site and locate non-competitive inhibitor binding there.
  • Explain that non-competitive binding changes enzyme shape, reduces active-site function and lowers activity despite substrate presence.
  • Distinguish non-competitive from competitive inhibition using binding site and substrate-response evidence.

IB Biology HL C1.1.14 Hl Allosteric Sites and Non Competitive Inhibition Questions question 1

[Maximum number: 1]

The dashed line shows the relationship between the activity of an enzyme and the concentration of its substrate. Which curve shows the effect of a non-competitive inhibitor on this relationship?

Figure for Question IB Biology HL C1.1.14 Hl Allosteric Sites and Non Competitive Inhibition Questions question 1 — IB Biology HL
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