Biology 9700/53 Oct Nov 2014 | Cambridge AS Level Past Papers With Mark Scheme

1. Comparing lactase activity immobilized in different ways (adsorption, entrapment, and bonding), analyzing glucose production rates, and assessing statistical significance.

2. Outlining experimental methods to evaluate enzyme activity, including substrate processing and glucose quantification techniques.

3. Investigating phosphate uptake in plants using radioactive tracers, analyzing leaf radioactivity trends, and exploring the effects of light on nutrient transport.

4. Improving experimental reliability through better controls, replication, and measurement standardization in plant nutrient uptake studies.

5. Locating radioactive phosphate transport tissue using X-ray film, visualizing activity patterns, and determining differences under varied environmental conditions like airflow.