Biology 9700/35 Oct Nov 2019 | Cambridge AS Level Past Papers With Mark Scheme

1. Investigating the effect of surface area to volume ratio on diffusion rate using agar cubes and ascorbic acid.

2. Recording and analyzing decolourization time for agar cubes of varying sizes.

3. Modifying procedures to examine ascorbic acid concentration effects on diffusion rates.

4. Estimating ascorbic acid concentrations in plant extracts using calibration graphs and bar charts.

5. Drawing plan diagrams of stained plant root transverse sections and labeling key tissues.

6. Identifying mitosis stages and calculating photomicrograph magnifications using xylem cell observations.