The National 4 Biology course has three units:

• Unit 1: Cell Biology

• Unit 2: Multicellular Organisms

• Unit 3: Life on Earth

Unit 1 Cell Biology Topics

• Cell division and its role in growth and repair

• DNA, genes and chromosomes

• Therapeutic use of cells

• Properties of enzymes and use in industries

• Properties of microorganisms and use in industries

• Factors affecting respiration

• Controversial biological procedures

Unit 2 Multicellular Organisms Topics

• Sexual and asexual reproduction and their importance for survival of species

• Propagating and growing plants

• Genetic information

• Growth and development of different organisms

• Biological actions in response to internal and external changes to maintain stable body conditions

Unit 3 Life on Earth Topics

• Animal and plant species depend on each other

• Impact of population growth and natural hazards on biodiversity

• Nitrogen cycle

• Fertiliser design and environmental impact of fertilisers

• Adaptations for survival

• Learned behaviour in response to stimuli linked to species survival

Course Assessment

• Unit tests (pass/fail) + Added Value Unit (no added value unit for 2020/21)