Biology 9700/53 May June 2017 | Cambridge AS Level Past Papers With Mark Scheme

1. Testing the effects of caffeine on reaction time and heart rate using randomized double-blind trials to eliminate bias.

2. Measuring reaction times with computer programs and heart rates with pulse meters, recording data over a controlled duration.

3. Statistical analysis using Pearson’s correlation to assess the relationship between caffeine concentration and mean reaction time.

4. Investigating beetle population size and body size distribution across different temperature gradients.

5. Completing missing values in population data and analyzing the effect of temperature on beetle body size and population dynamics.