Biology 9700/11 May June 2019 | Cambridge AS Level Past Papers With Mark Scheme

1. Calculating magnification of electron micrographs using cell structure measurements.

2. Functions of cilia and root hairs in increasing surface area and facilitating transport processes.

3. Structural comparisons of cellular organelles by size, including nucleus, mitochondria, and ribosomes.

4. Investigating enzyme activity trends with varying substrate concentrations, interpreting saturation and reaction rate limitations.

5. Transport pathways in plant tissues, distinguishing between apoplast and symplast routes and the role of the Casparian strip.

6. Mechanisms of immune responses in autoimmune disorders like myasthenia gravis, involving antibodies and neuromuscular junction receptors.