Oxygen is the correct answer !
I'm pretty sure it's a community.
Hope this helps :)
C. ATP (Adenosine Triphosphate) has three phosphate groups attached. Each one of the groups occupies an extremely high energy bond (free energy that can do work). In muscle contraction, that high-energy bond is broken and the energy is released for muscle contraction. So when the bond is broken, you end up with ADP (Adenosine Dipohosphate) - broken down.
Number 1 to 5 which would be that then answer
true
Explanation:
messages from the nervous system cause these muscular contractions
