Which of the following mechanisms is used by large polar molecules when they leave or enter the cell
A)by vesicular transport
B)by osmosis
C)by selective passive transport
D)with the help of large lipid carriers

Question

Quizplus · Accepted Answer

Large polar molecules cannot pass through the plasma membrane by passive diffusion or transport, so they require the assistance of membrane-bound vesicles to enter or leave the cell. This process is referred to as vesicular transport. Examples include endocytosis, exocytosis, and transcytosis. Option B, osmosis, is the movement of water molecules across a selectively permeable membrane from an area of high water concentration to low water concentration, and is not specific to large polar molecules. Option C, selective passive transport, is the diffusion of small, non-polar molecules across a selectively permeable membrane, and is not applicable to large polar molecules. Option D, large lipid carriers, is not a recognized mechanism for the transport of large polar molecules across the plasma membrane.

Which of the Following Mechanisms Is Used by Large Polar