Question

Cell membranes (plasma membranes) help organisms maintain homeostasis by controlling what substances may enter or leave cells. Some substances can cross a cell membrane through passive transport, while other substances can only cross a cell membrane through active transport. What is the difference between active and passive cellular transport? A. Active transport requires the cell to expend energy, while passive transport does not. B. Passive transport is the only form of transport that requires the use of protein carriers. C. Active transport is the only form of transport that requires the use of protein carriers. D. Active transport requires the cell to form vesicles, while passive transport is done through osmosis.

Answer 1

I'm not sure what I read a year ago but I think it'll be A.

Answer 2

Answer:

you are right, the answer is a

Explanation:

As the name implies, passive transport is a form of cellular transport in which no energy is expended. Passive transport includes diffusion, diffusion through ion channels, osmosis, and facilitated diffusion, which requires a carrier protein.

Active transport is the movement of materials from areas of lower concentration to areas of higher concentration. Moving materials up their concentration gradient requires a cell to expend energy. Active transport includes endocytosis, exocytosis, and cell membrane pumps, which requires a carrier protein.