Biology 9700/35 May June 2024 | Cambridge AS Level Past Papers With Mark Scheme

1. Investigation on the effect of ethanol concentration on beetroot cell membrane permeability using pigment release as an indicator.

2. Preparation of ethanol solutions via proportional dilution, followed by observation of pigment intensity to determine membrane permeability changes.

3. Data interpretation involving trend analysis of pigment release and its correlation with ethanol concentration.

4. Blood pressure study measuring the effect of beetroot juice consumption, compared with a control group receiving water, using mean blood pressure difference.

5. Examination of plant leaf transverse sections, drawing and labeling vascular bundles, and identifying structural differences between specimens.

6. Quantitative calculations involving actual leaf thickness, magnification, and graphical data analysis for blood pressure investigation.