2007-04-15 10:31:40 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Biology
Sometimes cells need to move materials against the concentration gradient - from low to high concentration. This allows cells to get more than their share of nutrients from the surroundings, to get rid of waste products, etc.
Some cells rely on active transport for their functions. For instance, nerve cells must transport ions against the gradient to get ready for the next nerve message to be sent.
2007-04-15 10:35:56 · answer #1 · answered by ecolink 7 · 1⤊ 0⤋
Importance Of Active Transport
2016-12-14 18:07:39 · answer #2 · answered by ? 4 · 0⤊ 0⤋
One reason is the body needs to set up concentration gradients in order to be ready for action potentials. An example is a nerve cell at rest transporting potassium in and transporting sodium out. An action potential will occur when the sodium floods in and potassium floods out - depolarizing the cell.
2007-04-15 10:39:30 · answer #3 · answered by MigrainBoy161 3 · 1⤊ 0⤋
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Because it allows some molecules to that cannot enter the cell by passive transport through the plasma membrane phospholipid layer to enter the cell
2016-04-08 08:18:41 · answer #4 · answered by Kayla 4 · 0⤊ 0⤋