Question

.. (a) By which process do CO2 and O2 move in and out of a cell ?
(b) What will happen to a living cell when placed in hypotonic solution ?
(c) Why is plasma membrane called a selectively permeable membrane?​

Answer 1

Answer:

I will give the answer in evening

Answer 2

A.Oxygen and carbon dioxide move across cell membranes via simple diffusion, a process that requires no energy input and is driven by differences in concentration on either side of the cell membrane.

B.Hypotonic solutions have more water than a cell. Tapwater and pure water are hypotonic. A single animal cell ( like a red blood cell) placed in a hypotonic solution will fill up with water and then burst.

C.The plasma membrane is called a selectively permeable membrane as it permits the movement of only certain molecules in and out of the cells. ... If plasma membrane ruptures or breaks down then molecules of some substances will freely move in and out of the cells.