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IB Biology HL C1.2.11 Hl Link Reaction Questions

Follow the link reaction in the mitochondrial matrix: pyruvate releases CO₂, NAD is reduced, and coenzyme A carries the acetyl group into the Krebs cycle in IB Biology HL C1.2.11.

Syllabus
First assessment 2025
Course
Biology HL
Level
HL

Exam points

  • Locate the link reaction in the mitochondrial matrix.
  • Explain pyruvate oxidative decarboxylation to acetyl-CoA with carbon dioxide release and NAD reduction.
  • Explain how coenzyme A accepts the acetyl group and links glycolysis to the Krebs cycle.

IB Biology HL C1.2.11 Hl Link Reaction Questions question 1

[Maximum number: 1]

Where in the mitochondrion does the formation of acetyl CoA occur?

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