Answer:
As I think second option is the correct one.
Explanation:
The myofibrils are made up of thick and thin myofilaments, which help give the muscle its striped appearance. The thick filaments are composed of myosin, and the thin filaments are predominantly actin, along with two other muscle proteins, tropomyosin and troponin.
I have no clue but I just want the thanks
Answer:
Positive and negative ions
Explanation:
when these two come together it is considered ionic bonding.
