Biology 9700/32 May June 2010 | Cambridge AS Level Past Papers With Mark Scheme

1. Immobilization of yeast cells in sodium alginate beads for enzyme activity experiments with carbon dioxide detection using bromothymol blue.
2. Measurement of bead surface areas using grids and formulas, and evaluation of the effects of surface area variations on reaction rates.
3. Analysis of carbon dioxide production trends over time using capillary tubing measurements and explanation of limiting factors in enzyme activity.
4. Plan diagrams and high-power drawings of plant organ transverse sections, emphasizing structural features like xylem and cortex.
5. Magnification calculation for plant organ photomicrographs using known dimensions and recorded measurements.
6. Graphical analysis of water absorption rates in plants, plotted over a specified period, to examine uptake patterns and influencing variables.