Biology 9700/43 Oct Nov 2016 | Cambridge AS Level Past Papers With Mark Scheme

1. Inheritance of fur and nose color in Labrador retrievers through gene interaction at B and E loci, with genetic diagram for possible offspring phenotypes.

2. Differences between C3 and C4 plant biochemistry, rubisco's quaternary structure, and its active site specificity for CO₂ and O₂.

3. Production of Golden Rice via genetic engineering, role of plasmids, promoters, and selective breeding for local adaptations.

4. Drug resistance in Plasmodium parasites, evolutionary mechanisms of resistance, and limitations of the Hardy-Weinberg principle for haploid stages.

5. Insect biodiversity on Acacia trees, relevance to ecosystem conservation, and connection to larger herbivore populations.

6. Menstrual cycle hormonal regulation, ovulation markers, and contraceptive pill mechanisms to prevent pregnancy.

7. Calcium ion function in sarcomere contraction, motor end plate energy requirements, and neuromuscular synapse adaptations.

8. Respirometer setup for measuring woodlouse respiration rates under varying temperatures, and comparison of anaerobic pathways for ethanol and lactate production.