Biology 9700/53 Oct Nov 2017 | Cambridge AS Level Past Papers With Mark Scheme

1. Determining the Km value of urease at different temperatures by measuring conductivity changes during urea hydrolysis.

2. Serial dilution preparation for varying urea concentrations and controlling experimental variables using a conductivity meter.

3. Sketching Michaelis-Menten curves to analyze enzyme kinetics and estimating optimal urease temperature based on Km values.

4. Evaluating salt tolerance in barley varieties by observing germination rates across different salt concentrations.

5. Statistical analysis of germination data to identify anomalies and test correlations between salt concentration and germination.