Multiple Choice
Which statement about channel proteins is true?
A) They have a central pore of nonpolar amino acids.
B) They are integral membrane proteins.
C) They aid in active transport across a membrane.
D) They allow any substance to diffuse through a membrane.
E) They are anchored in a membrane by an outer coating of polar amino acids.
Correct Answer:
Verified
Correct Answer:
Verified
Q220: A marathon runner has just arrived in
Q221: Refer to the figure below showing a
Q222: If a cell needs to acquire cholesterol,
Q223: Refer to the table below. <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB5650/.jpg"
Q224: In some biological membranes the lipid bilayer
Q226: Biological membranes are composed of a continuous
Q227: Because some of the lipids composing biological
Q228: Depending on an animal cell's job, it
Q229: In passive transport, molecules move<br>A) against their
Q230: The process of _ involves coated pits,