Rate of Photosynthesis (OCR GCSE Biology A, Combined (Gateway Science Suite)): Quizzes
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Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What happens to the rate of photosynthesis as temperature increases beyond the optimal point?
What happens to the rate of photosynthesis as temperature increases beyond the optimal point?
It decreases due to enzyme denaturation
Why does increasing temperature initially speed up photosynthesis?
Why does increasing temperature initially speed up photosynthesis?
Photosynthesis is enzyme-controlled
What happens to enzymes if the temperature exceeds a certain threshold during photosynthesis?
What happens to enzymes if the temperature exceeds a certain threshold during photosynthesis?
They start to denature
How does higher light intensity affect the rate of photosynthesis in most plants?
How does higher light intensity affect the rate of photosynthesis in most plants?
It increases the rate
Why does increasing light intensity eventually stop increasing the photosynthesis rate?
Why does increasing light intensity eventually stop increasing the photosynthesis rate?
Other factors become limiting
What role does carbon dioxide play in photosynthesis?
What role does carbon dioxide play in photosynthesis?
It is a key reactant
What is the function of chlorophyll in photosynthesis?
What is the function of chlorophyll in photosynthesis?
It captures light energy
How does a magnesium deficiency affect photosynthesis?
How does a magnesium deficiency affect photosynthesis?
It reduces chlorophyll levels
Which method is commonly used to measure the rate of photosynthesis?
Which method is commonly used to measure the rate of photosynthesis?
Observing oxygen production
What is measured to determine oxygen volume produced in the pondweed experiment?
What is measured to determine oxygen volume produced in the pondweed experiment?
Distance the gas bubble travels
How is light intensity varied in the pondweed photosynthesis experiment?
How is light intensity varied in the pondweed photosynthesis experiment?
By adjusting the lamp distance
Why must only the independent variable be changed in the photosynthesis experiment?
Why must only the independent variable be changed in the photosynthesis experiment?
To maintain the validity of results