Animal and plant cells, specialised cells, and diffusion, osmosis and active transport.
Enzymes and the factors affecting them, food tests, a balanced diet, and digestion.
Aerobic and anaerobic respiration, the word equations, and gas exchange surfaces.
Blood and the circulatory system, and transport in plants by xylem and phloem.
The nervous system and reflexes, hormones, and how the body keeps a constant internal environment.
Asexual and sexual reproduction, reproduction in flowering plants, and human reproduction.
DNA, genes and alleles, monohybrid crosses with Punnett squares, and variation and mutation.
Food chains and webs, energy transfer, nutrient cycles, and human impact on the environment.