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IB Biology HL 2.2.5 Chloroplast Adaptations Question Bank

Practise IB Biology HL 2.2.5 through exact HL questions on thylakoid gradients, grana structure, Calvin-cycle enzymes and chloroplast adaptation.

Syllabus
First assessment 2025
Course
Biology HL
Level
HL

Exam points

  • Analyse how thylakoid surface area, lumen volume and grana support chemiosmosis.
  • Use chloroplast ultrastructure to locate light-dependent reactions and Calvin-cycle enzymes.
  • Evaluate chloroplast adaptations by linking each compartment to its photosynthetic function.

B2.2.5 (HL)—Chloroplast adaptations question 1

[Maximum number: 1]

The image shows part of a chloroplast and was produced by electron tomography.

Figure for Question B2.2.5 (HL)—Chloroplast adaptations question 1 — IB Biology HL

What is the name of I and which reactions of photosynthesis occur in II?

Name of I

Reactions in II

Matrix

Light-independent reactions

Stroma

Light-independent reactions

Matrix

Light-dependent reactions

Stroma

Light-dependent reactions

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