Question

Assertion: An animal cell swells up when present in a hypotonic solution.Reason: More water molecules enter the cell than they leave.​

Answer 1

Both Assertion and Reason are true.

• Solutions are mixtures composed of a solvent and a solute molecule.
• A hypotonic solution has a lesser solute concentration than the water content compared with a cell placed in that solution.
• Salt or Sugar solution is an example of a hypotonic solution. Here, sugar or salt is the solute and water is the solvent.
• When animal cells are placed in a hypotonic solution, the cell will swell as the water moves from the region of higher concentration to the lower concentration and attains a flaccid state. This diffusion of water molecules is known as Osmosis.
• Osmosis occurs only through a semipermeable membrane.
• The chance of bursting the animal cell is higher in a hypotonic solution because of the absence of cell walls like plants. So they must undergo osmoregulation to control the concentration of solutes and water in the body despite the external environment. This fact is exploited in the case of the addition of extra salt or sugar in pickles and jams for killing the microbes.
• Plant cells will not burst up in a hypotonic solution and maintain a turgor pressure due to the presence of a cell wall.

Answer 2

Answer:

alkali down MRI on drug such potion KFC of sci-fi pun NFL