Biology 9700/32 May June 2023 | Cambridge AS Level Past Papers With Mark Scheme

1. Serial dilution preparation for reducing sugar concentration, followed by Benedict’s test to monitor sugar levels through color changes.

2. Graphical determination of reducing sugar concentration in grape extract and estimation of grape age based on sugar content.

3. Investigation of reducing sugar accumulation with aging, linked to amylase activity breakdown of starch in grapes.

4. Structural analysis of plant root cross-sections, highlighting xylem vessel elements and observable differences in anatomical features.

5. Quantitative calculations of root diameter and magnification using scale bars to ensure accurate morphological assessments.

6. Emphasis on precision in experimental setup, result interpretation, and biological structure analysis in plant-based practical investigations.