Biology 9700/36 Oct Nov 2020 | Cambridge AS Level Past Papers With Mark Scheme

- Urease enzyme, catalysis, urea breakdown, ammonium carbonate, carbon dioxide, alkaline solution, red litmus paper, color change.
- Serial dilution, concentration preparation, urease solution, experimental setup, spotting tile, urea solution, mixing procedures.
- Reaction time, litmus paper observation, alkalinity assessment, data recording, result interpretation, concentration estimation.
- Soil temperature effects, urease activity measurement, temperature range, arbitrary units, graphical data representation, trend analysis.
- Plant leaf structure, transverse section, epidermis observation, cell wall identification, drawing accuracy, observable differences.
- Scale bar usage, actual depth calculation, measurement accuracy, scientific notation, unit application, photomicrograph analysis.