Which of the following is NOT a characteristic of carrier-mediated transport?
A given carrier protein normally works equally well transporting in both directions.
The membrane of a single tubular cell contains more than one type of carrier protein.
The distribution of carrier proteins can vary from one portion of the cell surface to another.
In carrier-mediated transport, a specific substrate binds to a carrier protein.
A given carrier protein normally works equally well transporting in both directions.
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