Biology 9700/05 Oct Nov 2006 | Cambridge AS Level Past Papers With Mark Scheme

1. Identification of artificial biological solutions: protein detection using biuret test, glucose presence via Benedict's test, and starch-amylase interactions to confirm artificial saliva.

2. Quantitative glucose estimation in diabetic artificial urine: Benedict's test standardization using known glucose concentrations to create a calibration curve.

3. Kidney transverse section analysis: low-power plan diagram and high-power drawing of renal capsule and adjacent tubules, emphasizing structural distinctions.

4. Measurement of renal tubule dimensions using eyepiece graticule and magnification calculations; elliptical tubule shapes explained by sectioning angles.

5. Microscopic examination techniques: identification of glomerulus-specific features, tissue proportions, and accurate anatomical representations through drawing.