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it is A I tried to work it out my best have a nice day God bless you
<span>Cross bridges are created when myosin heads bind to ATP. This phenomenon is basically muscle contraction at work. In order for myosin heads to be bound with ATP at the actin active site, it must be excited with Calcium.
Once myosin heads bind with ATP, it begins to slide and perform muscle contractions in the body, allowing a person to move.</span>
That depends on where you are in the world. Due to the fact that America is the ONLY nation in the world who uses the ft/in system, it would most likely be measured in meters.
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To me we wouldn't know as much as we do. There is so much they don't want us to know about space. Just watch the moon at night and you can get a better answer.
Actively transport molecules across the cell membrane