Biology 9700/42 Oct Nov 2015 | Cambridge AS Level Past Papers With Mark Scheme

1. Investigating metabolic processes by identifying respiratory molecules, calculating ethanol production, and examining yeast activity in sugar-rich environments.

2. Exploring microbial adaptation and secondary metabolites, focusing on gold ion detoxification by Delftia acidovorans and applications for bioremediation.

3. Using DNA sequencing to analyze genetic variation and speciation processes in bird populations based on wintering grounds.

4. Studying germination in wheat, the role of growth regulators, sucrose transport genes, and mechanisms supporting early seedling growth.

5. Examining biodiversity threats from habitat fragmentation and suggesting conservation methods, including the role of zoos.

6. Understanding scorpion venom's impact on synaptic function, sensory detection mechanisms, and responses to environmental stimuli.

7. Assessing photosynthesis through carbon dioxide uptake, the role of chloroplast components, and light intensity effects.

8. Analyzing genetic inheritance in cattle, differentiating artificial from natural selection, and codominance in coat color and horn traits.