Biology 9700/13 May June 2015 | Cambridge AS Level Past Papers With Mark Scheme

1. Mitochondria and prokaryotic features, light microscope resolution limits, and ribosome subunit composition.
2. Double membrane organelles in plant cells, glucose transport plateau causes, and fluidity factors in cell membranes.
3. Inhibition of enzymes, temperature effects on thermophilic enzymes, and carrier protein roles in active transport.
4. Hemoglobin mutations and amino acid coding changes, forces aiding water transport in plants, and phloem water potential changes due to solute loading.
5. Effects of nicotine and carbon monoxide on the cardiovascular system, and symptoms distinguishing lung cancer from COPD.
6. Nitrogen cycle processes by nitrifying bacteria, immune responses to vaccines, and energy pyramids in food chains.