It's letter C :) I think..
D. A change in the amount of polar ice will alter how ocean currents move
Answer:
The correct answer is D) integral membrane proteins.
Explanation:
257/5000
Ionic channels consist of oligomeric transmembrane integral proteins (formed by the assembly of several subunits). Said proteins act as gate channels that allow the passage of certain ions eg. calcium, sodium, potassium, etc.
Answer:
Active transport often takes place in the internal lining of the small intestine.
Explanation:
