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Question : Read the given statements and select the correct option. Statement 1: A primary myofilament is composed of a bundle of rod-like molecules of a protein myosin. Statement 2: Myosin and actin together a form a contractile apparatus.

Answer»

Both statement 1 and 2 are correct.
Statement 1 is correct but statement 2 is incorrect
Statement 1 is incorrect but statement 2 is correct.
Both statement 1 and 2 are incorrect.

SOLUTION :The primary myofilaments CONSIST mainly of MYOSIN protien. In the presence of `CA^(2+)` and enerhy from ATP, actin and myosin interact forming actomyosin which causes contraction of muscles.


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