Active Transport- Features, Types and Significance
To sustain life, many substances need to be transported into, out of, and between cells. In some cases, this can be accomplished through passive transport, which uses no energy. In many cases, however, the cell needs to transport something against its concentration gradient. In these cases, active transport is required. Active transport mechanisms require the use of the cell’s energy, usually in the form of adenosine triphosphate (ATP). If a substance must move into the cell against its concentration gradient, that is, if the …Read more
