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sponsoredwalk
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http://www.youtube.com/watch?v=U6QYDdgP9eg&feature=player_embedded
What are the opinions of people in this room on this video?
Is it significant? Does it have credibility?
Note: To skip past the responses to creationist claims go to the start of the third minute, but the music is good & it's funny to read, I advise watching it all
What are the opinions of people in this room on this video?
Is it significant? Does it have credibility?
from the description with the video
Water will flow across a membrane to try to equalize the ion concentration. If there is a lot of polymer in a vesicle it will be surrounded by many ions, thus causing water to flow into the vesicle, increasing the internal pressure and stretching the membrane. Fatty acids are in equilibrium between the vesicle and solution. If 2 vesicles are near one another they will gradually swap fatty acids. If one membrane is under tension, the fatty acid "on rate" will be greater than the "off rate" (move to a lower energy state by relaxing the pressure). It will suck up fatty acids from solution. The other vesicle will still give them off, but they will disappear (sucked up by neighbor) and not return. Therefore, the vesicle with high internal pressure will grow and the neighbor will shrink.
Note: To skip past the responses to creationist claims go to the start of the third minute, but the music is good & it's funny to read, I advise watching it all