diffusion

[kImBrO]

i'm doing a project for my honors biology class & i wanted to know, can anyone explain to me what diffusion is & how it works in our body! I really need some help! thanx

[Poison]

diffusion is the passive movement of a substance from high concentration to low concentration.
have a look at these links:

http://biology.arizona.edu/sciconn/less ... fault.html

http://www.mun.ca/biology/Osmosis_Diffusion/tutor2.html

http://www.emc.maricopa.edu/faculty/far ... SPSYS.html

http://home.earthlink.net/~dayvdanls/cell_membranes.htm

http://www.skoool.ie/skoool/homeworkzone.asp?id=231

http://www.und.nodak.edu/dept/jcarmich/ ... /lab4.html

Then I think you can tell what is not clear about it and we can discuss.

[thank.darwin]

http://physioweb.med.uvm.edu/diffusion/

Diffusion and osmosis explanations/demonstrations from Middlebury College.

http://science.nhmccd.edu/biol/osotutor.html

Two short tutorials with questions, answers, and encouragement (explanations).

Diffusion helps our cells get the needed materials that they need such as water, H2O and 02. Look at these sites- they might help