Biology 9700/52 May June 2022 | Cambridge AS Level Past Papers With Mark Scheme
- Investigation of diffusion in beetroot tissue using calcium hypochlorite solution.
- Measurement of dependent variable: width of red tissue remaining post-soaking.
- Hypothesis: Inverse relationship between surface area:volume ratio and red tissue width.
- Methodology for data collection: standard laboratory equipment, controlled variables, logical sequence.
- Calculation of percentage change in volume of red tissue.
- Analysis of temperature effects on betalain pigment release using colorimetry.

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