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C1.3.14 (HL)—Thylakoids as light-dependent systems

Thylakoids produce ATP and reduced NADP in the light-dependent reactions, supplying the Calvin cycle with energy and reducing power, connecting the mechanism to observable photosynthesis evidence.

Syllabus
First assessment 2025
Objective
C1.3.14
Level
HL

Exam analysis

Chance of appearing1%of analysed past papers
Latest appearanceMay 2022
Most common paperPaper1
Typical marks1

Common command terms

  • State

Recent exam appearances

May 2022Paper1 ["HL"] · TZ131[ 1 ]C1.3.14 (HL)—Thylakoids as light-dependent systems
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Coverage 2022–2022 · Updated 15 Jul 2026

Concept essentials

  • Thylakoids house the light-dependent reactions of photosynthesis.
  • ATP and reduced NADP are products transferred to the Calvin cycle.
  • The Calvin cycle uses energy and reducing power made in thylakoids.
  • Oxygen is released from water splitting but is not used by the Calvin cycle.
ConceptIB Biology HL