Answer:
<u>Once the myosin-binding sites are exposed, and if sufficient ATP is present, myosin binds to actin to begin cross-bridge cycling. Then the sarcomere shortens and the muscle contracts. In the absence of calcium, this binding does not occur, so the presence of free calcium is an important regulator of muscle contraction.</u>
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Answer:
3 - Photoreceptors.
Explanation:
Photoreceptors are a sensor that is connected to your retina. They sense light and send the message to your brain. The sensors automatically squint your eyes if something will blind you.
The correct answer is 'photoreceptors'.
They are a separate legal entity from their Members. They have the benefit of limited liability for their Members. They are taxed as a partnership. They have the organisational flexibility of a partnership. THIS IS FROM THE INTERNET SO PLEASE REWORD IT IN YOUR OWN WORDS AND DON'T PLAGIARIZE! :-)
Out of the three solutions one is acidic because there is a property of acids which states that they turn litmus papers red
