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GCSE BIOLOGY - Photosynthesis EXAM REVISION QUESTIONS WITH VERIFIED SOLUTIONS LATEST 2025 UPDATE.

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GCSE BIOLOGY - Photosynthesis EXAM REVISION QUESTIONS WITH VERIFIED SOLUTIONS LATEST 2025 UPDATE.

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GCSE BIOLOGY - Photosynthesis EXAM REVISION QUESTIONS WITH
VERIFIED SOLUTIONS LATEST 2025 UPDATE.




Photosynthesis - ANSWER- carbon dioxide + water
=light energy=>
glucose + oxygen


Chlorophyll - ANSWER- a green substance found in chloroplasts which absorbs light energy



Carbon dioxide and Water - ANSWER- these substances are converted into glucose



Oxygen - ANSWER- by-product of photosynthesis



Limiting factors - ANSWER- light intensity,temperature and concentration of carbon dioxide



Light intensity - ANSWER- this provides energy needed for photosynthesis causing rate to
increase up to a certain point at which rate ceases to increase


Carbon dioxide level - ANSWER- this is needed for photosynthesis causing rate to increase up
to a certain point at which rate stops increasing


Temperature - ANSWER- this effects the speed a which enzymes work if enzymes are
denatured by high temperature then rate will decrease


Respiration - ANSWER- glucose is used for this process as a way of releasing energy



Cellulose - ANSWER- glucose is used to make this substance which is found in the cell wall
of plant cells

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