Active Travel England -

active transport  There are 2 main modes of transport of molecules across any biological membrane These are passive and active transport Passive transport Passive transport Osmosis Active transport Facilitated diffusion Cell transport Bulk transport Phagocytosis Vesicular transport Endocytosis

A key example of an active transporter is the sodium-potassium pump This exports three sodium ions in return for two potassium ions This is key In active transport, the particles move across a cell membr ane from a lower concentration to a higher concentration Active transport is the

This animation explains active transport across membranes and why it is needed! Transcript Active transport comes hand in hand with diffusion and osmosis It is a key mechanism for moving substances, usually small molecules, into, out of, or between