Biology 9700/34 Oct Nov 2010 | Cambridge AS Level Past Papers With Mark Scheme

1. Effect of pH on sedimentation rates in yeast suspensions, including methods for measuring sedimentation levels using graph paper scales.
2. Impact of calcium chloride concentration on yeast sedimentation time, plotted to determine optimal sedimentation conditions.
3. Sources of experimental error in sedimentation studies and strategies for improving accuracy and reliability in measurements.
4. Preparation and analysis of plant organ transverse sections, emphasizing vascular bundle structure and labeling of xylem tissues.
5. High-power observation and detailed drawing of epidermal trichomes and adjacent cells in stained plant tissue slides.
6. Comparative study of plant organ transverse sections, including diameter ratio calculations and observable structural differences.