Biology 9700/41 May June 2013 | Cambridge AS Level Past Papers With Mark Scheme

1. Structural analysis of dicotyledonous leaf sections, carbon dioxide entry into leaves, and reduced NADP’s role in the Calvin cycle.

2. GM mosquito strategies to control Aedes aegypti populations, gene regulation mechanisms, and promoter functions in gene technology.

3. Continuous culture process in mycoprotein production, prevention of mutant strains, and fungal protein mass calculations.

4. Temperature influence on lizard oxygen consumption rates, ATP synthesis, and comparison of oxygen debts in different lizard species.

5. IVF techniques involving oocyte selection based on polar bodies, cryopreservation effectiveness, and advantages of freezing oocytes.

6. Synaptic transmission involving acetylcholine, roles of acetylcholinesterase, dopamine-related schizophrenia treatment, and genetic mutations in dopamine receptors.

7. Sex-linked inheritance of coat color in cats, genetic diagrams for tortoiseshell females, and explanation of male phenotype restrictions.

8. Impact of logging on mammal populations in Sarawak, population recovery dynamics, and extinction risks for species like marbled cats and otters.