1. Hormones and Nervous System: Endocrine gland functions, differences between nervous and hormonal communication, insulin and progesterone production. 2. Cell Biology and Osmosis: Structure and function of plant cells in different solutions, differences in appearance due to osmosis, and the effect of sodium chloride concentrations. 3. Respiration and Gas Exchange: Yeast anaerobic respiration, factors affecting gas production, measuring respiration rate, and vital lung capacity. 4. Ecology and Energy Transfer: Food chains, pyramids of numbers, biomass transfer efficiency, and energy loss in ecosystems. 5. Genetics and Inheritance: Dominant and recessive traits, genetic crosses in rats, probability of offspring traits, and polygenic inheritance. 6. Human Physiology and Health: Cardiovascular health, impact of body mass on heart disease, immune responses to allergies, balanced diet components, and dietary effects on human health.