09-27-2004, 05:49 PM #1
Help a struggling biology student?? (Diffusion)
An animal cell with a high concentration of molecule X is put in a solution with a lower concentration of melecule . If X can pass through the membrane, which way will it move? If the membrane is impermeable to X, what will happen? Explain your answers.
Ok im thinking.... if x can pass through the plasma membrane then it will and try to make the whole thing isotonic or (=) but if it can't... it will draw in water and try to dilute X. Also is Na+ moving to a higher concentration facilitated diffusion, or simple diffusion?
09-27-2004, 05:51 PM #2
yeah your on target. Diffusion will move from the hypertonic solution to the hypotonic solution. If x cannot pass throught the membrane the solvent -undoubtedly water- will move instead.
edit: when the water moves its called osmosis
Last edited by symatech; 09-27-2004 at 05:54 PM.
09-27-2004, 06:00 PM #3
Thanks man I appreciate it, im tryin to get some of these questions done on a wksht and dont have my book to check my answers with.
09-27-2004, 06:12 PM #4
sure. nice avatar btw
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