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In active transport, this is a cell transport (biology) question, what are the two main characteristics?

User Beardy
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The 2 main characteristics of active transport are that energy is needed in the form of ATP to move molecules and other ions against the concentration gradient, from low to high concentration of the said substance and also the transport is mediated or assisted by certain carrier proteins, a certain kind of transmembrane protein that spans across the complete width of the membrane.
User Jeff Hay
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