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... These transport proteins can help move certain molecules down a channel (tube) to get through the cell membrane or can be physically moved across the membrane. Each transport protein is very specific, allowing specific molecules to pass through the membrane.
First, active transportation means when any cell pumps solute or substances against their concentration gradient (moving low to high concentration), thus resulting in need of any energy, or ATP. Cells use active transport so they can maintain internal concentrations because it may be different to its environment. ... ATP (the Pi attaches to enzyme) is use to change the conformation of enzyme so that active site can fit 3 sodium ions. Once released to the outside of the cell, the Pi leaves the enzyme thus changing back to its original conformation which has an active site of 2 potassium ions.
Approximate Word count = 637
Approximate Pages = 2.5
(250 words per page double spaced)
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