Answer:
Option (A).
Explanation:
Muscle contraction may be defined as the physiological process of the activation of tension generating sites that occur within the muscle fibers. Actin, myosin, troponin and other proteins are important for muscle contraction.
The calcium ion is important for the muscle contraction. The binding of calcium with troponin causes the movement of tropomyosin out of the grooves between the actin molecules during muscle contraction.
Thus, the correct answer is option (A).
<span>Except for identical twins, all the other human beings are genetically distinct from each other is ture because of </span>sexual reproduction.
We have polluted it— the air, water and the ground.
Some people have tried to clean up the environment
We need carrier proteins for steroid hormones because they help in the transportation from the cell they were released from to their target cell.
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