Uniporters, Symporters, and Antiporters
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A uniporter carries one substance; a symporter carries two substances the same direction; an antiporter carries two in opposite directions.
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The sodium-potassium pump from Bio 0362 is an antiporter, moving sodium and potassium opposite ways across one membrane.
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These terms describe direction and count, independent of whether the transport is active or facilitated.
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