Biology 9700/35 May June 2019 | Cambridge AS Level Past Papers With Mark Scheme

1. Serial dilution preparation for protein solutions, visual colorimetric analysis using biuret test, and protein concentration estimation in an unknown sample.

2. Effect of infection on blood plasma protein levels, immune system response contributing to increased protein concentration, and graphical representation of data over time.

3. Plan diagrams and detailed anatomical drawings of plant leaf tissues under microscopy, focusing on vascular and epidermal structures.

4. Magnification calculations for midrib depth and comparative structural analysis between two different plant leaves using photomicrographs.