The diagram below illustrates the appearance of a plant cell after it had been put in a certain solution.
(a) Explain the appearance of the cell at the end of the treatment.
(b) Explain the results obtained if a red blood cell is subjected to the same treatment
Answer:
a)- The cell was placed in hypotonic solution compared to cell sap vacuole. Water molecules move into the cell by osmosis, causing the cell to distend as sap vacuole
enlarges exerting turgor pressure which pushes the cytoplasm toward the rigid cellulose cell wall. Cells become turgid.
b)- When red blood cells are placed on a hypotonic solution, compared to cells cytoplasm, they gain water by osmosis, swell and eventually burst or haemolyse due to lack of rigid cellulose cell wall.
enlarges exerting turgor pressure which pushes the cytoplasm toward the rigid cellulose cell wall. Cells become turgid.
b)- When red blood cells are placed on a hypotonic solution, compared to cells cytoplasm, they gain water by osmosis, swell and eventually burst or haemolyse due to lack of rigid cellulose cell wall.
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Explain what would happen to red blood cells if they are placed in a concentrated salt solution. 
