<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>
at what stage of human development wuold you exept to first see abeating heart? <u>the</u><u> </u><u>answ</u><u>er</u><u> is</u><u> </u><u>ç</u>
Plants showing hydrotropism grow in response to water.
Check on google they will give you the answer and others descriptions
