Biology 9700/51 May June 2016 | Cambridge AS Level Past Papers With Mark Scheme

1. Systematic sampling to investigate plant species distribution and abundance in relation to pond proximity.
2. Analysis of soil water content and species diversity using Spearman’s rank correlation.
3. Evaluation of significance in Spearman’s rank results for soil air content and plant species correlation.
4. Experimental controls for nicotine addiction studies, including saline-only and non-pretreated groups.
5. Effects of topiramate on dopamine secretion in nicotine addiction, including quantitative comparison of dopamine responses.
6. Mechanistic analysis of topiramate on dopamine, noradrenaline, and serotonin levels for nicotine addiction treatment.