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Yeast cells contain the enzyme catalase which breaks down hydrogen peroxide to produce oxygen - Scottish Highers Biology - Question 5 - 2018
Question 5
Yeast cells contain the enzyme catalase which breaks down hydrogen peroxide to produce oxygen. An experiment was carried out into the effect of lead nitrate concentr... show full transcript
Worked Solution & Example Answer:Yeast cells contain the enzyme catalase which breaks down hydrogen peroxide to produce oxygen - Scottish Highers Biology - Question 5 - 2018
Step 1
Identify the independent variable
Answer
The independent variable in this experiment is the concentration of lead nitrate (Option D). This is because it is manipulated by the experimenter to observe its effect on the activity of catalase, which is indicated by the volume of oxygen produced.