Biology 9700/21 Oct Nov 2016 | Cambridge AS Level Past Papers With Mark Scheme

1. Identification of cell structures in animal cells, centrioles' role in mitosis, and mechanisms for sodium ion transport across membranes.

2. Factors affecting transpiration, hydrogen bonding in xylem water movement, and transpiration's reliance on environmental conditions.

3. Lysozyme structure and function, primary structure definition, enzyme-induced fit mechanism, and reaction rate analysis with competitive inhibition effects.

4. Cholera transmission mechanisms, genetic basis of antibiotic resistance in bacteria, and public health impacts of multiple resistance strains.

5. Monoclonal antibody therapy mechanisms for non-infectious diseases, immune-mediated destruction of diseased cells, and auto-immune disease characterization.

6. Features of the human gas exchange system, smoking-induced structural changes in bronchi, oxygen release from oxyhemoglobin in tissues, and red blood cell containment in blood versus tissue fluid.