2.1
Cell Structure

2.1.2
Biological Molecules

2.1.3
Nucleotides and nucleic acids

2.1.4
Enzymes

2.1.5
Biological Membrane

2.1.6
Cell division, cell diversity and cellular organisation

3.1.1
Exchange surfaces

3.1.2
Transport in mammals

3.1.3
Transport in Plants

4.1.1
Communicable diseases, disease prevention and immune system