1.1: Explain the concept of an ecosystem.

1.2: Explain the terms habitat, population, community and species.

1.3: Differentiate between biotic and abiotic factors which affect organisms in a habitat.

1.4: Explain how abiotic factors can affect the population size and distribution of organisms.

2.1: Explain how organisms are fed.

2.2: Explain the terms producer, consumer and decomposer.

2.3: Construct and interpret food chains and food webs from given information.

2.4: Explain the role of the sun as the main source of energy in an ecosystem.

1.1: Compare the structure of a generalised plant cell with a generalised animal cell.

1.2: Relate the structures of the cell to their functions.

1.3: Explain the process of diffusion.

1.4: Explain the process of osmosis.

2.1: Identify the major food groups.

2.2: Explain the importance of a balanced diet.

2.3: Describe the structure and function of the human digestive system.

2.4: Explain the processes of respiration and breathing.

2.5: Describe the effects of cigarette smoking on the respiratory system.

3.1: Relate the structures of the heart and blood vessels to their functions.

3.2: Describe the components of blood.

4.1: Describe the mechanisms of transport in plants.

4.2: Explain the process of photosynthesis.

5.1: Distinguish between sexual and asexual reproduction.

1.1: Describe the states of matter.

1.2: Describe the particulate nature of matter.

1.3: Describe the processes of melting, boiling, freezing and condensation.

2.1: Differentiate among elements, compounds and mixtures.

2.2: Differentiate among solutions, suspensions and colloids.

2.3: Investigate the factors that influence the solubility of a solute and the rate of dissolving.

3.1: Explain the differences between physical and chemical changes.

3.2: Explain the concept of pH.

3.3: Distinguish among acids, bases, and salts.