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GCSE BIOLOGY – Bioenergetics EXAM REVISION QUESTIONS WITH VERIFIED SOLUTIONS LATEST 2025 UPDATE.

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GCSE BIOLOGY – Bioenergetics EXAM REVISION QUESTIONS WITH VERIFIED SOLUTIONS LATEST 2025 UPDATE.

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GCSE BIOLOGY – Bioenergetics EXAM REVISION QUESTIONS WITH
VERIFIED SOLUTIONS LATEST 2025 UPDATE.




Write the word equation for photosynthesis - ANSWER- carbon dioxide+ water -> oxygen +
glucose


Write the symbol equation for photosynthesis. - ANSWER- 6CO2 + 6H2O -> C6H12O6 + 6O2



Name 4 factors that can affect the rate of photosynthesis. - ANSWER- LIGHT INTENSITY
CARBON DIOXIDE CONCENTRATION
TEMPERATURE
CHLOROPHYLL


Draw a graph to show how temperature affects the rate of photosynthesis. - ANSWER-



Draw a graph to show how light intensity affects the rate of photosynthesis. - ANSWER-


Draw a graph to show how the level of carbon dioxide affects the rate of photosynthesis. -
ANSWER-



Describe AND explain the graph of temperature versus rate of photosynthesis. - ANSWER- -
increasing temperature increases rate of photosynthesis (because temperature increases the speed
of chemical reactions)
- increasing the temperature too much causes the rate to fall again (because the enzymes have
denatured)


Describe AND explain the graph of light intensity versus rate of photosynthesis. - ANSWER-
the higher the light intensity the higher the rate of photosynthesis but it plateaus if the other factors
are not in supply

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