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Red Blood Cells

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Red Blood Cells

Postby zada15 » Sun Oct 22, 2006 6:05 pm

What happens when red blood cells are placed in water?[/code][/quote]
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Postby druid » Sun Oct 22, 2006 6:17 pm

In distilled water they'll burst.
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Postby Condraz23 » Sun Oct 22, 2006 8:51 pm

Probably due to exessive osmosis which leads to cytolysis.
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Postby sdekivit » Mon Oct 23, 2006 2:59 pm

Condraz23 wrote:Probably due to exessive osmosis which leads to cytolysis.


not probably ;) iso-osmotic fluid is 0,9% NaCl-solution.
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Postby Jonathan488 » Tue Oct 24, 2006 1:03 am

If they are placed in distilled water they are in a hypotonic solution therefore they will burst, if they are places in a salt concentration higher than about 1% they will shrivel due to plasmolysis and osmosis(hypertonic solution). The water in the cell will go from high concetration to low concentration. However if they are in just plain water it will probably be a hypotonic solution and the cells will burst.
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Postby sdekivit » Tue Oct 24, 2006 8:23 am

Jonathan488 wrote:If they are placed in distilled water they are in a hypotonic solution therefore they will burst, if they are places in a salt concentration higher than about 1% they will shrivel due to plasmolysis and osmosis(hypertonic solution). The water in the cell will go from high concetration to low concentration. However if they are in just plain water it will probably be a hypotonic solution and the cells will burst.


plasmolysis can't occur in RBC because they don't have a cell wall like plant cells. They just shrink because os fluid moving through the membrane.
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Postby Dr.Stein » Thu Oct 26, 2006 8:54 am

sdekivit wrote:
Jonathan488 wrote:If they are placed in distilled water they are in a hypotonic solution therefore they will burst, if they are places in a salt concentration higher than about 1% they will shrivel due to plasmolysis and osmosis(hypertonic solution). The water in the cell will go from high concetration to low concentration. However if they are in just plain water it will probably be a hypotonic solution and the cells will burst.


plasmolysis can't occur in RBC because they don't have a cell wall like plant cells. They just shrink because os fluid moving through the membrane.

We call this shrink thing as "crenation" 8)
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