Biology 9700/31 Oct Nov 2022 | Cambridge AS Level Past Papers With Mark Scheme

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- Investigation of ascorbic acid (vitamin C) diffusion across partially permeable membrane (dialysis tubing).
- Preparation of ascorbic acid solutions with varying concentrations for experimental analysis.
- Measurement of iodine solution volume to determine ascorbic acid presence in solutions.
- Calculation of ascorbic acid concentration in external solution based on experimental results.
- Identification of sources of error in concentration determination and suggestions for methodological improvements.
- Analysis of water content reduction in melon cubes soaked in concentrated sucrose solution over time.

CIE AS & A Level Biology (9700) Nov 2022

Laura Bellini

Classification: Paper 3

Page count: 16

Viewed: 140

Last update: 2 months ago

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Biology 9700/31 Oct Nov 2022 | Cambridge AS Level Past Papers With Mark Scheme

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