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Concentration gradient

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Concentration gradient

Postby pinkprep002 » Sat Jan 22, 2005 9:27 pm

Hey guys, i feel super dumb because science was never my strong suit! I took College Prep Biology. Mid-Terms are coming up fast. I have a study guide but I need some help! :x

Define concentration gradient. Explain its effect on the rate of diffusion.
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Postby mith » Sun Jan 23, 2005 4:22 am

I don't remember exactly but it concerns how much a solute is concentrated on one side of the cell membrane. For example, if there's a high concentration of sodium inside the cell than outside the cell, the salt would diffuse out. And of course a higher concentration gradiant (difference between outside and inside) would cause a directly increase in rate of diffusion.
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Postby thank.darwin » Thu Feb 10, 2005 11:27 pm

Go to this site and click on - passive diffusion

http://www.northland.cc.mn.us/biology/B ... port1.html

This should help - hope it's not too late :(
No amount of experimentation can ever prove me right; a single experiment can prove me wrong.
-Albert Einstein
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