Biology 9700/33 Oct Nov 2015 | Cambridge AS Level Past Papers With Mark Scheme

1. Effects of sodium chloride concentration on catalase activity in yeast cells, measured via temperature rise.
2. Relationship between copper sulfate concentration and catalase activity through oxygen bubble release rates.
3. Drawing and labeling vascular bundles in plant stem sections with accurate proportions.
4. Calculating actual measurements and simplifying ratios from magnified images of plant stem sections.
5. Identifying habitat adaptations of plants based on observable structural features.
6. Comparing anatomical differences between two plant stem specimens using prepared diagrams.