AQA · Biology · 8461
GCSE Biology: Photosynthesis (video)
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What is the name of the reaction plants use to trap light energy?
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Photosynthesis.
Is photosynthesis an endothermic or exothermic reaction?
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Endothermic, because it takes in energy.
The green chemical ? absorbs light energy during photosynthesis.
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chlorophyll
What are the two reactants in photosynthesis?
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Carbon dioxide and water.
What are the two products of photosynthesis?
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Glucose and oxygen.
The chemical formula for glucose is ?.
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C6H12O6
What does it mean when a factor is described as a limiting factor in photosynthesis?
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Photosynthesis is not as fast as it could be because there is not enough of that factor.
What happens to the rate of photosynthesis when light intensity increases and light is the limiting factor?
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The rate of photosynthesis increases.
Why do leaves with patches of chlorophyll have a lower rate of photosynthesis?
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Because they can trap less light energy than normal leaves.
What happens to the rate of photosynthesis if temperature continues to increase beyond a certain point?
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The enzymes denature and the rate of photosynthesis falls.
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