Question:

What are the two protein molecules responsible for the contraction of muscles?

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A. Pepsin & insulin

B. Myosin & pepsin

C. Hemogoblin and insulin

D. Myosin and actin

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4 ANSWERS


  1. The correct answer is D.


  2. actin and myosin

    yay lol

  3. D. Myosin and actin

  4. D. Myosin and actin.  Wiyhthe help of troponin and tropomyosin

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