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Learning objective

Describe the light-dependent reaction including chlorophyll photoionisation, electron transfer, ATP production, reduced NADP and photolysis.

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Topic

Energy transfers official content

Subtopic

Photosynthesis

Aqa A Level BiologyEnergy transfers in and between organisms

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Quick explanation

Describe the light-dependent reaction including chlorophyll photoionisation, electron transfer, ATP production, reduced NADP and photolysis

  • This point belongs to Energy transfers official content, especially Photosynthesis.
  • You need to be able to describe the light-dependent reaction including chlorophyll photoionisation, electron transfer, ATP production, reduced NADP and photolysis.
  • The key ideas to know are reduced NADP, chlorophyll, and photoionisation.
  • Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

reduced NADPchlorophyllphotoionisationATP

Why it matters

This objective helps connect Photosynthesis to exam-style questions, flashcards, and revision notes for Energy transfers official content.

Quick student answer

What is the primary role of chlorophyll in the light-dependent reactions of photosynthesis?

Direct answer

Chlorophyll captures light energy, which is essential for the light-dependent reactions.

Key terms

  • ATP: Adenosine triphosphate, the primary energy carrier in cells, produced during the light-dependent reactions.
  • Electron transport chain: A series of protein complexes in the thylakoid membrane that transfer electrons, leading to ATP synthesis.

Common trap

Confusing photolysis with respiration: Remember that photolysis occurs during photosynthesis and is specifically the splitting of water, while respiration involves the consumption of oxygen.

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