Monomers and polymers
Carbohydrates
Lipids
Proteins
Enzymes
Structure of DNA and RNA
DNA replication
ATP
Water
Inorganic ions
Structure of eukaryotic cells
Eukaryotic cell division
Prokaryotic cells
Viruses
Microscopy
Cell fractionation and centrifugation
Structure of cell membranes
Diffusion and facilitated diffusion
Osmosis
Active transport, cotransport and absorption of glucose
The immune system
Monoclonal antibodies
Surface area to volume ratio
Gas exchange in insects, fish and plants
Gas exchange in humans
Digestion and absorption
The circulatory system
The heart
Haemoglobin
Xylem
Phloem
DNA, genes and chromosomes
DNA and protein synthesis
Genetic diversity from mutations
Genetic diversity from meiosis
Genetic diversity and adaptation
A species
Investigating diversity
Biodiversity within a community
Photosynthesis
Respiration
Energy and ecosystems
The nitrogen and phosphorus cycles
Fertilisers
DNA probes