Biology 9700/12 March 2024 | Cambridge AS Level Past Papers With Mark Scheme

1. Measurement and calibration of eyepiece graticules for microscopy, emphasizing accurate scale conversion.

2. Mitochondrial cristae visualization using electron microscopy due to resolution limitations of light microscopes.

3. Role of mitochondria in energy release, highlighted by selective staining methods in cellular observations.

4. Sequence of glycoprotein synthesis and secretion in goblet cells, including vesicle formation and membrane fusion.

5. Distinctions in prokaryotic and eukaryotic cell features, focusing on ribosomes, DNA structure, and organelles.

6. Osmosis principles demonstrated in partially permeable membranes, correlating water potential gradients to solution behavior.