Give an activity to demonstrate endosmosis and exosmosis
Answers
Endosmosis
When a cell is kept in a hypertonic solution, the water starts moving into the cell from a region of higher concerntration to the region of lower concerntration is called endosmosis. As a result the cell swells up.
Activity -
Buy some raisens
Put them into a hypertonic solution (eg. water)
Now wait for some time and observe the raisens.
The raisens starts swelling up.
Observation - Through this activity we observe that after putting raisens in hypotonic solution the raisens swells up. Their is also an increase in thier weight.
Exosmosis
When a cell is kept in a hypotonic solution, the inner content of cell shrinks as the water moves from the region of higher concerntraion to the region of lower concerntration. This is called exosmosis.
Activity -
Buy some raisens
Put them in a hypotonic solution (eg. A sports drink with a lot of salts in it)
Wait for a while and observe that the cell starts shrinking
Observation - Through this actvity we observe that after putting raisens in a hypotonic solution the raisens starts losing water content and gets shrinked.
Answer:
This process is called endosmosis. If these swollen raisins are now kept in a concentrated salt or sugar solution (a hypertonic solution), water from the turgid raisins will come out of the cells and they will shrink. This process is called exosmosis. ... After putting raisins in hypotonic solution the raisins swells up.