Know the structure of the cell surface membrane with reference to the fluid mosaic model.

Understand how passive transport is brought about by:

- diffusion
- facilitated diffusion (through carrier proteins and protein channels)
- osmosis.

Understand how the properties of molecules affects how they are transported, including solubility, size and charge.

Know that large molecules can be transported into and out of cells through the formation of vesicles, in the processes of endocytosis and exocytosis.

Understand the process of active transport, including the role of ATP.

Know that phosphorylation of ADP requires energy and that hydrolysis of ATP provides an accessible supply of energy for biological processes.