Biology 9700/04 Oct Nov 2006 | Cambridge AS Level Past Papers With Mark Scheme

1. Energy values in carbohydrates versus lipids for ATP production; respiratory quotient variations in Siberian hamsters under temperature changes.

2. Genetic inheritance patterns of hair tip color in Australian Shepherd dogs; test crosses to determine genotype.

3. Osmoregulation processes in the kidney: renal fluid water potential changes in the loop of Henle.

4. Speciation in snapping shrimp populations due to geographic isolation by the Isthmus of Panama.

5. ABA-induced stomatal closure; transpiration rate reductions under low wind speeds.

6. Neuronal adaptations for rapid action potential transmission; sensory receptor mechanisms converting energy to action potentials.

7. Photosynthetic light energy conversion to ATP; oxidative phosphorylation processes in mitochondria.