Define the following:(i) isotonic (ii) Hypotonic(iii) Hypertonic

1.	Define the following:(i) isotonic (ii) Hypotonic(iii) Hypertonic
Answer» (i) The external solution is isotonic, if it balances the osmotic pressure of the cell i.e. it has the same solute concentration as the cytoplasm. (ii) If the external solution is weaker than the cytoplasm, it is said to be hypotonic. (iii) If the external solution is more concentrated than the cytoplasm, it is hypertonic.

Answer»

(i) The external solution is isotonic, if it balances the osmotic pressure of the cell i.e. it has the same solute concentration as the cytoplasm.

(ii) If the external solution is weaker than the cytoplasm, it is said to be hypotonic.

(iii) If the external solution is more concentrated than the cytoplasm, it is hypertonic.

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