1. Cells and Transport - Structure and function of cells, movement of molecules, biological molecules, and food tests. 2. Enzymes and Digestion - Enzyme function, digestion, absorption, food and diet in humans. 3. Photosynthesis and Plant Biology - Photosynthesis, plant nutrition, plant transport, sensitivity, and movement in plants. 4. Human Physiology - Respiration, gaseous exchange, transport in animals, hormones, homeostasis, and reproduction. 5. Genetics and Evolution - DNA, cell division, inheritance, variation, selection, and human growth. 6. Ecology and Environment - Ecosystems, nutrient cycling, microbes, human impact, and food production.