Biology 9700,34 Oct Nov 2024 | Cambridge AS - A Level Past Papers With Mark Scheme

1. Biochemical Analysis & Sugar Estimation | Potassium Manganate(VII) Test for Reducing Sugars – Preparing sugar solutions, measuring reaction times, estimating sugar concentration in carrot extract, and improving accuracy.

2. Ripening & Post-Harvest Life | Ethylene and Potassium Manganate(VII) Effects on Bananas – Analyzing the effect of potassium manganate(VII) on fruit ripening, plotting data, predicting post-harvest life, and explaining deviations in results.

3. Microscopy & Root Structure | Drawing & Labeling Plant Root Cross-Sections – Creating plan diagrams, drawing detailed cell structures, and identifying key tissues such as the endodermis and epidermis.

4. Comparative Plant Anatomy | Observing Structural Differences in Root Cross-Sections – Comparing histological features between different plant roots and recording observable differences in tabular form.

5. Measurement & Scale Bar Calculations | Determining Actual Size from Microscopic Images – Using scale bars to calculate real-life dimensions of plant sections, ensuring precise measurements for comparative studies.