- Question 112 marks
Red blood cells and clotting, and an osmosis experiment with red cells in salt solutions.
- Question 214 marks
Adaptive features of hydrophytes such as the water lily, and comparing stomata numbers.
- Question 313 marks
Synapses and Parkinson's disease, protein shape and receptor function, and carrier proteins.
- Question 412 marks
Effect of temperature on photosynthesis in leaf discs, and enzymes.
- Question 514 marks
Single vs double circulation, blood vessels to organs, and the liver in excretion.
- Question 615 marks
Ovarian hormones, antibodies crossing the placenta, breastfeeding, and passive immunity.