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1. Investigating the effect of sodium chloride concentrations on potato tissue bending and estimating unknown solution concentration through graph-based measurements.

2. Analyzing the relationship between sodium chloride solution concentration and water potential in potato tissue based on proportional dilutions and osmotic responses.

3. Investigating the effect of temperature on diffusion rates through a cell membrane, interpreting data trends from molecule diffusion rates.

4. Constructing detailed plan diagrams and identifying tissue structures in stained transverse sections of plant leaves.

5. Comparing anatomical features of two plant leaf samples using photomicrographs and recording observable differences in tabular format.

6. Calculating the simplest whole number ratio of total leaf diameter to central vascular tissue diameter using photomicrograph measurements.

CIE AS & A Level Biology (9700) Jun 2020

Laura Bellini

Classification: Paper 3

Page count: 16

Viewed: 117

Last update: 3 months ago

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Biology 9700/34 May June 2020 | Cambridge AS Level Past Papers With Mark Scheme

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