Cell The Unit Of Life Question 80

Question: Channel proteins allow ions that would not normally pass through the cell membrane to go through the channel. What properties of the proteins are responsible for this?

Options:

A) The channels are often composed of charged or polar R groups.

B) The channels are often composed of hydrophobic R groups.

C) Both and

D) None of the above

Show Answer

Answer:

Correct Answer: A

Solution:

[a] The charged or polar lining of the channel proteins allows passage of polar and charged molecules.