Biology 9700/21 May June 2020 | Cambridge AS Level Past Papers With Mark Scheme

1. Identification and function of molecular structures and bonds in biological molecules, including solubility differences and polymer formation.

2. Analysis of cell cycle stages in plant meristematic tissue with labeled diagrams and descriptions of mitosis and spindle protein functions.

3. Comparison of enzyme activity in mutated and non-mutated forms, including calculation of \\(V_{\\text{max}}\\) and \\(K_m\\), and protein structure levels in polypeptides.

4. Gas exchange dynamics in mammalian lungs, focusing on partial pressure changes, roles of elastic fibers, and blood composition adaptations at high altitudes.

5. Immunological responses to TB vaccination, including macrophage activity, antibody production, memory cell roles, and challenges in eradicating TB through vaccination.

6. Translation process in eukaryotic cells, identification of nucleotide base types, codon-anticodon interactions, and tRNA structure.