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A student simulates muscle contraction in a model using the following order of events:Calcium pumps of the sarcoplasmic reticulum open.Tropomyosin moves.Calcium ions bind to troponin.Myosin heads bend to attach to actin filaments.Based on the order of steps in the student's model, will the muscle successfully contract?A. Yes, the muscle model will successfully contract because the sequence is correct No, because the calcium pumps cannot open before the tropomyosin movesB. No, because tropomyosin cannot move before the myosin heads attach to actinC. No, because tropomyosin cannot move before calcium ions bind to troponin

Respuesta :

Answer:

Option (B).

Explanation:

The muscles are one of the most important tissue of the body. The muscles helps in the contraction and movement of the organisms. Three different types of muscles are cardiac muscles, smooth muscles and skeletal muscles.

The contraction of the muscles occur in the sequential steps. Actin and myosin protein plays an important role in the muscle contraction. The attachment of the actin heads with the myosin is important for the muscle contraction and for the movement of tropomysoin.

Thus, the correct answer is option (B).