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[personal profile] kimberkit
My biochem prof is both fascinating and, oh, lions and tigers and bears, this class promises to kick my butt. But! I just thought I'd share this one thing that is still so spiffy to think about.

So you know that whole theory about eukaryotic cells evolving from prokaryotic cells? And hence organelles, like mitochondria, having their own DNA? Mitochondria, then, are reproducing on their own without the help of the nucleus. Here's the cool part: exercise makes mitochondria undergo binary fission faster. People who exercise have more mitochondria! And therefore, they really do have more energy. (Also, felllow nerds, a NYTimes link about how the increased mitochondria kept mice healthier despite those same mice having had genetic defects built into their mitochondria.)

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kimberkit

March 2012

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