Biology 9700/52 Oct Nov 2019 | Cambridge AS Level Past Papers With Mark Scheme

1. Investigation of temperature effects on respiration in Chlorella using hydrogencarbonate indicator, color standards, and measurement of carbon dioxide production.

2. Rate calculation of respiration from experimental data and correlation analysis between cell density and carbon dioxide production using Pearson’s linear correlation.

3. Examination of anomalous F2 generation ratios in breeding experiments for fungal pathogen resistance in melon plants and genetic inheritance patterns.

4. Utilization of microarrays to detect mRNA and analyze gene expression in resistant and non-resistant plants following fungal pathogen infection.

5. Analysis of gene expression data showing temporal differences between resistant and non-resistant melon varieties, including ratio and percentage change calculations.

6. Hypothesis testing and validity concerns in experimental design and statistical interpretation of biological data.