Biology 9700/53 Oct Nov 2013 | Cambridge AS Level Past Papers With Mark Scheme
1. Respirometer-based investigation of oxygen uptake in germinating seeds; hypothesis testing on temperature-respiration rate correlation.
2. Calculation of respiration rates in germinating seeds and optimization of temperature for maximum respiration activity.
3. Oxygen uptake by small mammals under varying temperatures; analysis of anomalies and higher metabolic rates at low temperatures.
4. Auxin transport in plant stems under air and nitrogen; effect of light conditions on transport rate, standardization of variables, and statistical hypothesis testing.

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