Biology 9700/31 May June 2015 | Cambridge AS Level Past Papers With Mark Scheme

1. Enzyme E catalysis of starch, identification of product molecules, and effect of enzyme concentration on reaction rate.

2. Serial dilution of starch solution to investigate its impact on product formation rate, including graphical representation of reaction data.

3. Hypothesis testing on starch concentration and reaction rate, supported or rejected based on experimental results.

4. Quantification of errors in experimental procedures, including systematic and random errors linked to syringe usage.

5. Modifying experimental procedures to assess the influence of inhibitor concentration (fruit juice X) on enzyme activity.

6. Analysis of plant stem transverse sections through plan and cellular diagrams, with focus on water transport tissues and cortex structure.

7. Determination of vascular bundle length using calibrated eyepiece graticule, with precise calculations.

8. Bar chart representation of fruit biological composition and percentage calculation of total fat content.