Biology 9700/34 Oct Nov 2020 | Cambridge AS Level Past Papers With Mark Scheme
- Amylase enzyme hydrolysis of starch into reducing sugars.
- Serial dilution of 1.0% starch solution; concentration reduction by factor of 10.
- Measurement of starch concentration using iodine solution; colorimetric analysis.
- Investigation of maltose concentration effect on maltase reaction rate; Michaelis-Menten constant estimation.
- Comparison of enzyme affinities based on Km values; analysis of substrate affinity.
- Observable differences in plant stem tissue sections; identification of xylem and pith features.

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