Biology 9700/42 March 2018 | Cambridge AS Level Past Papers With Mark Scheme

1. Conservation challenges for endangered species like aye-ayes, including genetic isolation and pre-zygotic barriers.

2. Structural and functional analysis of motor neurons, emphasizing impulse transmission in large organisms.

3. Genetic testing using RFLP for HbS allele in sickle cell anemia, exploring ethical considerations in embryo selection.

4. Rubisco's role in photosynthesis, photorespiration impact on C3 plants, and adaptations in C4 plants for carbon fixation.

5. Sliding filament model of muscle contraction, ATP roles, and kidney function assessments using creatinine and GFR analysis.

6. Genetic basis of albinism and inhibitory effects of starfish extract on tyrosinase activity in melanin production.