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प्रश्न
Explain why:
We gargle with saline solution in case of throat infection.
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उत्तर
Saline water is hypertonic. So any infectious agent such as bacteria in the throat gets plasmolysed and this cures the infection.
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संबंधित प्रश्न
Give appropriate biological or technical terms for the following :
Movement of molecules of a substance from their higher concentration to lower concentration when they are in direct contact.
A plant cell placed in a certain solution got plasmolysed. What was the kind of solution?
Differentiate between the following:
Plasmolysis and deplasmolysis
Mention whether the following statement is true or false. Correct the false statement by altering the last word only.
The shrinkage of protoplasm, when a cell is kept in hypotonic solution.
Leaves of the sensitive plant wilt and droop down on a slight touch. What mechanism brings about this change?
Distinguish between the following:
Filtration and diffusion
Distinguish between the following:
Hypotonic and Hypertonic solutions
Explain why:
Bacteria and fungi do not grow in pickles, jams, jellies and squashes.
Two potato cubes each 1 cm3 in size, were placed separately in two containers (A and B), the container A having water and the other (B) containing concentrated sugar solution. After 24 hours when the cubes were examined, those placed in water were found to be firm and had increased slightly in size and those placed in concentrated sugar solution were found to be soft and somewhat decreased in size. Use the above information to answer the questions that follow:
Account for the softness and decrease in size of the potato cubes which were placed in sugar solution.
Explain the term:
Diffusion
