Biology 9700/53 May June 2024 | Cambridge AS Level Past Papers With Mark Scheme

1. Focus on evaluating the mechanical properties of blood vessels, comparing arteries and veins based on breaking mass and percentage increase in length.

2. Emphasis on experimental design, including controlled variables, repetition for reliability, and safety precautions.

3. Use of statistical methods like calculating mean values and confidence intervals to ensure accurate data interpretation.

4. Analysis of differences in arterial and venous structure, such as wall thickness and muscular composition, influencing their mechanical properties.

5. Improvement suggestions include smaller mass intervals, extended mass range, and precision tools like force meters and fiducial markers.

6. Application of scientific methods, including data plotting, error reduction strategies, and clear differentiation between experimental and control variables.