Question

Materials essential to life processes move across a cell membrane through a variety of methods. What cell membrane structure allows water-soluble materials to be passively transported to the cytoplasm?

A. carrier proteins
B. endocytosis vesicles
C. Golgi complex vesicles
D. hydrophilic phospholipid tails

Answer 1

Answer: A. Carrier

Explanation: Proteins in the cell membrane that assist with facilitated diffusion are known as carrier proteins, or transport proteins, since they carry materials across the cell membrane.

Carrier proteins bind to a molecule on one side of the membrane, change shapes to shield the molecule from the lipid bilayer, and then release the molecule on the other side of the membrane.

Answer 2

It is A.Carrie Proteins.
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