Which of the Following Does Not Allow Movement of Water

Question

Which of the following does not allow movement of water across a cell membrane?
A) Carriers
B) Endocytotic vesicles
C) Channels
D) The lipid portion of the membrane

Accepted Answer

The lipid portion of the membrane is hydrophobic and does not allow water to pass through easily, unlike channels and carriers that facilitate water movement. Endocytotic vesicles are involved in transporting substances into the cell, not directly in water movement across the membrane.