Biology 9700/33 May June 2014 | Cambridge AS Level Past Papers With Mark Scheme

1. Investigating the impact of carbon dioxide on indicator color change and determining systematic errors in experimental apparatus.
2. Effects of varying CO2 concentrations on plant leaf area growth and implications for plant transport systems.
3. Microscopic observation of methylene blue staining in yeast cells to assess thermal damage and identify cell viability.
4. Quantitative modification techniques for estimating the heating temperature of yeast suspensions.
5. Morphological analysis of yeast cells for similarities to animal cells and calculations of actual cell dimensions using microscopy.
6. Design and execution of controlled experiments to evaluate biological processes involving gas exchange and staining.