Insights into cell membranes via dish detergent - Ethan Perlstein
View full lesson: http://ed.ted.com/lessons/insights-into-cell-membranes-via-dish-detergent-ethan-perlstein The cell membrane, like a good jacket, protects the ...
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Translator: Andrea McDonough Reviewer: Bedirhan Cinar Every cell in your body is separated from those around it by its outermost layer, its membrane. A cell membrane must be both sturdy and flexible. Imagine a membrane made of metal - great at keeping the cell's guts inside, but horrible at letting materials flow in and out. But a membrane made of fishnet stocking would go too far in the opposite direction - leaky, but easily torn. So, the ideal membrane falls somewhere in the middle. Over the past few centuries, we've learned a lot about the way membranes work. The tale starts in the late 1800's when, according to legend, a German woman named Agnes Pockels was doing dishes. Her observation, that not all detergents dissolve grease in the same way, piqued her curio...
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Translator: Andrea McDonough Reviewer: Bedirhan Cinar Every cell in your body is separated from those around it by its outermost layer, its membrane. A cell membrane must be both sturdy and flexible. Imagine a membrane made of metal - great at keeping the cell's guts inside, but horrible at letting materials flow in and out. But a membrane made of fishnet stocking would go too far in the opposite direction - leaky, but easily torn. So, the ideal membrane falls somewhere in the middle. Over the past few centuries, we've learned a lot about the way membranes work. The tale starts in the late 1800's when, according to legend, a German woman named Agnes Pockels was doing dishes. Her observation, that not all detergents dissolve grease in the same way, piqued her curio...
