LABORATORY REVIEW
DIFFUSION AND OSMOSIS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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water will move out of the eggplant cells and the cells will shrink.
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water will move out of the eggplant cells and the cells will swell.
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water will move into the eggplant cells and the cells will swell.
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Detailed explanation-1: -Putting salt on the eggplant triggers osmosis, which draws out excess moisture and the bitterness along with it.
Detailed explanation-2: -Key Idea: Salt pulls water out of cells killing them. The eggplant will get very wet.
Detailed explanation-3: -The water potential of the salt solution, being hypertonic, is less than that of the cytoplasm of the cell. Hence, water comes out of the cell through osmosis and protoplast shrinks. This process is called as plasmolysis.
Detailed explanation-4: -The salt water is a hypertonic solution, thus water will move out of the cell. As water moves out of the cells there is a loss of turgor pressure and the plasma membranes detach from the cell walls as the cells shrink.
Detailed explanation-5: -Similarly, if there is a higher concentration of dissolved salt outside of the cell (a hypertonic environment), then H20 will diffuse “out” from the cell and the cell will dehydrate and shrink and cellular metabolism will cease.