Required Practical: Photosynthesis Rate (AQA GCSE Biology Combined Science): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What does oxygen production indicate in this practical?
What does oxygen production indicate in this practical?
The rate of photosynthesis
Why is sodium hydrogen carbonate added to the water?
Why is sodium hydrogen carbonate added to the water?
To provide a consistent CO₂ source
Which plant is commonly used in this practical?
Which plant is commonly used in this practical?
Elodea (pondweed)
What is the distance moved by the oxygen bubble proportional to?
What is the distance moved by the oxygen bubble proportional to?
Volume of oxygen produced
What happens to photosynthesis rate as light intensity increases?
What happens to photosynthesis rate as light intensity increases?
Increases then levels off
Why does photosynthesis rate decrease at high temperatures?
Why does photosynthesis rate decrease at high temperatures?
Enzymes denature
When testing light intensity, what should you keep constant?
When testing light intensity, what should you keep constant?
Temperature and CO₂ concentration
How long is oxygen bubble movement typically measured for?
How long is oxygen bubble movement typically measured for?
5 minutes
What happens to rate when CO₂ concentration increases?
What happens to rate when CO₂ concentration increases?
Increases until another factor limits
Where is understanding photosynthesis factors particularly useful?
Where is understanding photosynthesis factors particularly useful?
Greenhouses