C, Proteins is the correct answer
The diffusion of water into or out of a cell is called osmosis.
-17 this is the answer becuase you subraction
Answer:
it allows a cell to regulate the movement of materials into and out of a cell.
Answer
Villi is present on both of surface
Explanation
Intestine and lungs both have million of villi on the surface .In lungs and intestine villi increase the surface area but purpose is different . In lungs it is use for air exchange and in intestine it is use for food absorption .Both Villi of intestine and lungs are one cell thick and have maximum blood capillaries for food and air exchange respectively .