Which of the following is a characteristic feature of a carrier protein in a plasma membrane? a) it is a peripheral membrane protein. b) it exhibits a specificity for a particular type of molecule. c) it requires the expenditure of cellular energy to function. d) it works against diffusion. e) it has few, if any, hydrophobic amino acids.

A characteristic feature of a carrier protein in a plasma membrane is the fact that it exhibits specificity for a particular type of molecule (Option B).

In conclusion, a carrier protein in a plasma membrane exhibits specificity for a particular type of molecule (Option B).

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The correct answer is B.

Explanation:

We know that carrier proteins are proteins that facilitate the movement of specific molecules across a permeable membrane. With that said, D is incorrect because they perform facilitated diffusion. C is incorrect because diffusion should never require energy, no matter what form or molecule. E is incorrect because the cell membrane has hydrophilic (water-loving) heads and hydrophobic (water-repelling) tails, so the molecule must contain certain amino acid types in order to pass substances through. They are not peripheral membrane proteins because they usually stay on the membrane and never leave it (under most cases). This leaves B to be the only correct answer.

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answer: c

explanation:

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