Question

1. Compare osmosis and diffusion.
2. Why plasma membrane is called selectively permeable membrane?
3. Compare endosmosis and exosmosis​

Answer 1

Explanation:

(1)Osmosis is the movement of solvent particles across a semipermeable membrane from a dilute solution into a concentrated solution. ... Diffusion: Diffusion is the movement of particles from an area of higher concentration to lower concentration. The overall effect is to equalize concentration throughout the medium.

(2)The plasma membrane is called a selectively permeable membrane as it permits the movement of only certain molecules in and out of the cells. ... As the plasma membrane acts as a mechanical barrier, the exchange of material from its surroundings through osmosis or diffusion in a cell won't take place.

(3)The key difference between the two processes is that in endosmosis the movement of water inside the cell while in the case of exosmosis the elimination of water out of it. ... Endosmosis takes place if the cells are placed in hypotonic solutions because of which, the cells may swell because of endosmosis.

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Answer 2

2 )The plasma membrane is called a selectively permeable membrane as it permits the movement of only certain molecules in and out of the cells. ... As the plasma membrane acts as a mechanical barrier, the exchange of material from its surroundings through osmosis or diffusion in a cell won't take place.

1)The main difference between the two is that diffusion can occur in any mixture, even when two solutions aren't separated by a semipermeable membrane, whereas osmosis exclusively occurs across a semipermeable membrane. There are actually three types of passive transport processes.

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