Question

The active sites on the G- actin are unmasked due to shifting of tropomyosin, for this Ca + +ions must bind to
(A) Troponin
(B) Tropomyosin
(C) Myosin
(D) Actin​

Answer 1

Explanation:

@) Troponin

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Answer 2

The correct answer is option A) Troponin.

The active sites on the G- actin are unmasked due to shifting of tropomyosin, for this Ca + +ions must bind to troponin.

During polarisation, the sarcoplasmic reticulum releases calcium into the sarcoplasma. Troponin-C is linked to by Ca++. The tropomyosin undergoes a confirmational change as a result. As a result, myosin's active sites on actin are revealed. Actin and myosin are joined by cross bridges. This causes the muscles to contract.

Magnesium is required for ATP-dependent phosphorylation processes.

The membrane potential is preserved with the help of sodium and potassium.

So the correct option is A.

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