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Unformatted text preview: Active and Passive T ransports 1. I know the difference between passive and active transport. 2. I know and can explain how ion channels, fascilitated diffusion, membrane pump, and second messenger proteins work in the cell. 3. I know endocytosis and exocytosis are used by cells to pass materials into and out of cells. Active transport requires chemical energy (ATP). Passive transport doesnt. ATP stands for Adenosine t riphosphate. (sugar is converted into ATP by the mitochondria in a cell, so that we can use it as energy) 20/8/2009 An ion channel is a protein in the cell membrane. I t lets certain ions to pass through the cell membrane, into the cell. These ions want to get into the cell because of diffusion. Diffusion is a passive transport and does not require any energy. Diffusion makes some ions to go into the cell probably because theres less concentration of that kind of ion inside the cell and theres a high concentration outside....
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