is a protein which serves the function of moving other materials within an organism. Transport proteins are vital to the growth and life of all living things. There are several different kinds of transport proteins.
Active transport requires energy, unlike passive transport. The carrier proteins in active transport act as a "pump" ( fueled by ATP) to carry/attach themselfves to useful proteins for the cell.
A protein channel is a transport protein that helps larger molecules, that would otherwise not be able to defuse throw the membrane of a cell, to move in or out of the cell depending on the...