Channel Proteins Allow Ions That Would Not Normally Pass Through

Multiple Choice

Channel proteins allow ions that would not normally pass through the cell membrane to pass through via the channel.The property of the channel protein that makes this possible is its pore, which is composed of

A) polar amino acid groups.
B) hydrophobic amino acid groups.
C) Ca²⁺.
D) carbohydrates.
E) nonpolar R groups.