How fast does biological chemistry happen?

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DaveC426913
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I've seen this before, but it boggles my mind when I try to put it in the context of a boxer practicing his jabs.
Just how fast are these individual reactions occurring?

giphy.gif

(Did I get he right GIF? It's supposed to be the one of muscles contracting.)
 
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Looks like a motor protein pulling a vesicle along probably a microtubule, not a muscle contraction, which would be actin and myosin.
Here's an animation:
 
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