Biology 9700/52 March 2019 | Cambridge AS Level Past Papers With Mark Scheme

1. Investigating water potential of onion epidermal tissue by measuring plasmolysis in sucrose solutions.

2. Preparing proportional dilutions of sucrose to create a concentration gradient for plasmolysis observation.

3. Determining 50% plasmolysis concentration for different tissues to infer water potential relationships.

4. Analyzing cancer incidence in individuals with maternal radiation exposure using chi-squared tests.

5. Relationship between blood cancer occurrence and maternal radiation exposure during pregnancy, plotted graphically.

6. Evaluating study validity, including methodological consistency and data reliability, for radiation and blood cancer correlation.