my notes summarise: - the components of the cell-surface membrane and their function - extrinsic and intrinsic proteins, glycoproteins, glycolipids and cholesterol etc. - simple and passive diffusion, osmosis and active transport. I outline the similarities and differences between these 3 modes of transport. - the absorption of glucose and amino acids from the ileum via co-transport involving sodium ions

This document contains a summary of the content in A-level biology module transport cross cell membranes. It contains a diagram and step-by-step process of glucose absorption into the ileum via co-transport and the role of active transport in this process, as well as a summary of osmosis, diffusion and active transport. A concise table of phospholipid bilayer components and functions as well as the fluid Mosaic model and diagrams are also included.

Transport across cell membranes - A-Level Biology notes