A sarcomere is the basic contractile unit of muscle fiber. Each sarcomere is composed of two main protein filaments—actin and myosin—which are the active structures responsible for muscular contraction. The most popular model that describes muscular contraction is called the sliding filament theory.
An -NH2 group is an AMINO group.......
I think it is C
but if im wrong im sorry
I hope this helps :3
Answer: <em>in my opinion i think losing mass!</em>
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<em>Hope this helps!</em>
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<em><u>Have A Great rest of your Day/Night!</u></em>
