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Learning objective

Required practicals 7 and 8: investigate leaf pigments by chromatography and dehydrogenase activity in chloroplast extracts.

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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

Required practicals 7 and 8: investigate leaf pigments by chromatography and dehydrogenase activity in chloroplast extracts

  • This point belongs to Energy transfers official content, especially Photosynthesis.
  • You need to be able to required practicals 7 and 8: investigate leaf pigments by chromatography and dehydrogenase activity in chloroplast extracts.
  • The key ideas to know are investigate, required, and pigments.
  • Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

investigaterequiredpigmentsleafpracticals

Why it matters

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

Quick student answer

Which of the following pigments is primarily responsible for absorbing light energy during photosynthesis?

Direct answer

Chlorophyll a is the primary pigment involved in photosynthesis, absorbing light mainly in the blue and red wavelengths.

Key terms

  • Chlorophyll: A green pigment found in plants that is essential for photosynthesis, absorbing light energy.
  • Dehydrogenase: An enzyme that catalyzes the removal of hydrogen from a substrate, playing a key role in metabolic pathways.

Common trap

Misidentifying pigments: Remember that chlorophyll a is the primary pigment, while others like carotenoids assist in light absorption.

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