SCIENCE
CELL BIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Animal cells have more permeable cell membranes than plant cells.
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Animal cells absorb more water than plant cells.
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Plant cells have cell membranes that prevent the cell from bursting.
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Plant cells have cell walls that prevent the cell from bursting.
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Detailed explanation-1: -But it does not get burst due to the presence of cell wall. Cell wall can withstand dilute hypotonic media and prevents bursting of cells. Therefore, plant cells withstand changes in environmental concentration much better than animal cells which get burst in such conditions.
Detailed explanation-2: -Key Idea: Salt pulls water out of cells killing them. Watch how the salt draws the water out of the cells (osmosis).
Detailed explanation-3: -Water will diffuse from a higher water concentration outside the cell to a lower water concentration inside the cell. Red blood cells placed in a solution with a lower water concentration compared to their contents (eg 1.7 per cent salt solution) will lose water by osmosis and shrink.
Detailed explanation-4: -Cell wall. The plant cell wall accounts for the turgidity and the rigidity in plants. The cell wall protects the plant cell from bursting due to the influx of water. Rather than bursting, the cell is able to withstand the osmotic pressure exerted by the water molecules.