There are several different types of membrane transport, today I have chosen to discuss active
transport. Active transport is the movement of particles through membranes from a lower
concentration region to a higher concentration region.
During active transport, substances move against the concentration gradient from low
concentration regions to high concentration regions, this process is maintained because active transport
is continuously moving ions through cell membranes from the lower region to the higher region.
Up to 40% of a cell’s energy supply is used to transport particles through membranes.
A carrier protein is required to move particles lower concentration regions to higher
concentration regions. These proteins have certain receptors that bind to specific molecules that need
transport.
Types of molecules that are transported using active transport:
-ions
-glucose
-amino acids