Biology 9700/35 May June 2017 | Cambridge AS Level Past Papers With Mark Scheme

1. Investigating reducing sugar diffusion from amylase-starch mixture through Visking tubing using Benedict’s test for sugar concentration.

2. Preparing serial dilutions to establish reducing sugar calibration and comparing sample X for diffusion estimation.

3. Effect of temperature on enzyme activity measured by light absorbance, correlating increased reducing sugar with optimal temperatures.

4. Calculating vascular bundle depth as a percentage of leaf depth using eyepiece graticule measurements for anatomical analysis.

5. Drawing plan diagrams and comparing structural differences between leaf sections from different specimens using microscopy.