Revision checklist

• Adaptations• Competition• Farming methods• TB in cattle• Indicator species• Food webs and chains• Chemicals in the food chain• Fertilisers – nitrates build

up in water = animals suffocate

• Pyramids of biomass and number

• Carbon cycle• Nitrogen cycle

• Genes, DNA, alleles• Genetic profiling• Sex chromosomes• Punnett squares and key

words• Dominant and recessive• Variation and Gregor Mendel• Genetic modification (GM)• Gene therapy (cystic

fibrosis)• Variation (continuous and

discontinuous)• Mutations• Evolution• Natural selection (e.g. In

rats and bacteria)

• Negative feedback• Control of body

temperature• Control of blood

glucose levels• Plant responses

(gravitropism, phototropism)

• Diagram of skin

• Health:• Drugs• Alcohol• Smoking• Food groups• Drug testing

QWC questions

• How did “......................” develop this characteristic over time =

• How do nitrates affect aquatic animals?

• Temperature regulation– Sweating– Hairs / feathers– Blood vessels

How would you investigate the amount of energy in different foods?