Biology 9700/34 May June 2017 | Cambridge AS Level Past Papers With Mark Scheme

1. Measuring concentration of molecule M in plant extract using potassium manganate(VII) as a colorimetric endpoint indicator.

2. Serial dilution of molecule M to generate a calibration curve for accurate concentration estimation.

3. Testing antibiotic properties of molecule M by measuring inhibition zones on agar with bacterial growth.

4. Eyepiece graticule measurements of tissue depths in a plant leaf cross-section to determine ratios and structural analysis.

5. Drawing plan diagrams of leaf cross-sections and annotating observable differences between leaf samples from different specimens.