Biology 9700/36 Oct Nov 2012 | Cambridge AS Level Past Papers With Mark Scheme

1. Investigating the effect of surface area on diffusion rates using agar blocks, analyzing iodine-stained agar block hydrolysis by solution E.

2. Identifying significant errors in experimental setups, including inconsistencies in handling or temperature control, and proposing modifications to enhance result reliability.

3. Studying enzyme-catalyzed reactions by measuring bubble speed in starch hydrolysis experiments, plotting time-course data, and analyzing reaction rate patterns.

4. Examining vascular tissue structure in plant organs through plan diagrams, focusing on phloem and xylem components, and comparing their spatial organization.

5. Calculating ratios of cell dimensions in plant root longitudinal sections, interpreting differences between cortex and xylem tissues based on photomicrograph observations.