Which Is True Regarding the Mediated Transport of a Substance

question 61

Multiple Choice

Which is true regarding the mediated transport of a substance across a plasma membrane?

• A)It depends upon the binding of that substance to a specific site on the membrane protein.
• B)It depends upon movement of proteins from one side of the membrane to the other.
• C)It always increases in direct proportion to the increasing concentration of the substance on one side of the membrane.
• D)Both "depends upon the binding of that substance to a specific site on the membrane protein" and "depends upon movement of proteins from one side of the membrane to the other" are correct.
• E)All of the choices are correct.

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Definitions:

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