2 Cell membranes

Explain the roles of membranes within cells and at the surface of cells

Describe the fluid mosaic model of membrane structure and the roles of its components

List the factors affecting membrane structure and permeability

Describe the movement of molecules across membranes

Describe the movement of water across membranes by osmosis and the effects that solutions of different water potential can have on plant and animal cells

Describe the role of membranes in cell signalling