Question

the cell membrane contains channels and pumps that help move materials from one side to the other. what are these channels and pumps made of? outside of cell cell membrane inside of cell (cytoplasm) (1 point) proteins carbohydrates lipids bilipids

Explanation:

Cell - membrane channels and pumps are specialized structures. They are made of proteins which can form pores or carriers to facilitate the movement of materials across the cell - membrane. Carbohydrates are mainly for cell - recognition and adhesion, lipids form the basic structure of the membrane bilayer but not the channels and pumps, and bilipids is not the correct term for these structures.

Answer:

proteins