Biology 9700/03 May June 2005 | Cambridge AS Level Past Papers With Mark Scheme

1. Enzyme activity experiment with egg white (albumin): comparison of enzyme digestion under varying temperatures and pH, using boiled and unboiled bacterial enzyme solutions.

2. Graphical analysis of pH impact on enzyme activity: plotting pH against reaction outcomes and explaining enzyme denaturation or activity optimization at specific pH levels.

3. Experimental modification to test enzyme concentration effects: altering enzyme quantities while maintaining constant substrate and environmental conditions.

4. Plant tissue analysis: plan diagram of a stained transverse section showing tissue distribution in dicotyledonous plant stems or roots, emphasizing vascular bundles.

5. High-power drawing: detailed visualization of cells near the specimen's center, illustrating cellular structure and arrangement for identification.