Biology 9700/52 May June 2021 | Cambridge AS Level Past Papers With Mark Scheme
- Investigation of catalase activity influenced by copper(II) sulfate as an inhibitor.
- Independent variable: concentration of copper(II) sulfate; dependent variable: volume of oxygen produced.
- Serial dilution method for preparing copper(II) sulfate concentrations.
- Data collection method for measuring oxygen production using catalase and hydrogen peroxide.
- Analysis of competitive vs. non-competitive inhibition of catalase by copper(II) sulfate.
- Chi-squared test for evaluating observed vs. expected phenotypic ratios in sweet pea plant inheritance.

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