Michael R.

asked • 12/13/16

How can i tell if a cell is iso/hypo/hypertonic based on the number of molecules?

in my animal vet science class we are studying cells. we are doing a lab to determine if a cell is isotonic, hypertonic, or hypotonic. We are using an online software which is very confusing. It has me putting 10 solute and 10 water molecules inside of the cell and 20 water molecules outside of the cell. The question is "Describe whether the cell is isotonic, hypotonic, or hypertonic. explain.". My original answer is the cell is hypotonic because most of the solute molecules are inside of the but my friend disagrees with me and says the cell is isotonic. Can you shed some light?

1 Expert Answer

By:

Nick O. answered • 12/13/16

UCLA/UOP D.D.S. M.S.| DAT Tutor| Biology| Chemistry |Effective |

Michael R.

So if the cell had 5 solute and 15 water molecules in and out of the cell, it would be isotonic? 
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12/13/16

Nick O.

Yes, assuming we are disregarding any other potential sources of solutes.
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12/13/16

Michael R.

Thanks! 
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12/13/16

Mandfj F.

Question. If the environment is 50% solvent and 50%solute and the cell is 75%solvent and 25%solute, will it make the solution hypertonic? Would the cell be hypotonic since the solute is much low in concentration then of the solvent. Thank u.
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01/08/18

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