Biology 9700/12 Oct Nov 2016 | Cambridge AS Level Past Papers With Mark Scheme

1. Virus size and resolution limits of light and electron microscopes for typical, Mimivirus, and Pandoravirus.

2. Order of organelle functions in enzyme production and secretion: nucleolus, ribosome, Golgi body, vesicle.

3. Differences in organelle extraction by mass during centrifugation, with specific functions like ATP production or protein synthesis.

4. Prokaryotic vs. eukaryotic cell features: DNA type, ribosome size, and membrane-associated proteins.

5. Roles of glycosidic bond hydrolysis in digesting polysaccharides like amylose, amylopectin, and glycogen.

6. Active transport dependency on ATP, evidenced by oxygen concentration effects and mitochondria presence.

7. Nitrogen base features, including cytosine's single ring structure and triple hydrogen bonding.

8. Meselson-Stahl experiment insights into DNA replication and hybrid DNA formation with isotopes.

9. Processes involved in water transport through xylem: cohesion, adhesion, and hydrogen bonding.

10. Hemoglobin's oxygen dissociation curve shift due to CO₂ concentration and implications for oxygen delivery.