Explain why the hypotonic blood cell bursts, the hypertonic blood cell shrivels

Question

Explain why the hypotonic blood cell bursts, the hypertonic blood cell shrivels and the isotonic blood cell is normal. On the atomic level, what is happening to cause these effects? You may use the atomic hypothesis as an axiom (that is, it is given; you do not have to prove it). Every other fact you use to explain these has to be based on what you know from the atomic hypothesis. You may not use arguments based on concentration gradients, but you must stick to an atomistic explanation. Write at least 300 words – to explain and justify your analysis; quote from the atomic hypothesis and kinetic theory. All analysis must be carried out from an atomistic viewpoint based on the atomic hypothesis.

Explanation / Answer

hypotonic means the solute concentration outside the cell is lower than inside the cell so the water rushes into the cell in an attempt to reach equilibrium. isotonic means equal solute conc in and out the cell. there is no net movement. hypertonic means the solutes concentration is higher outside the cell than inside. water rushes out of the cell causing it to shrivel in order to reach equilibrium.

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