What Is the Function of Tropomyosin in Muscle Cells

question 19

Multiple Choice

What is the function of tropomyosin in muscle cells?

• A)Tropomyosin binds to actin molecules and brings about shortening of the muscles.
• B)Tropomyosin covers the myosin binding sites on the actin filaments, preventing contraction from occurring.
• C)Tropomyosin is the contractile unit of the muscle cell.
• D)Tropomyosin stores calcium.

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