In a resting muscle, which protein subunit hides the myosin-binding si…

Question

In a resting muscle, which protein subunit hides the myosin-binding sites on actin?

Accepted Answer

B. Troponin

1. Troponin sits at intervals along tropomyosin.
2. At rest one of its subunits covers the active sites.
3. So myosin cannot bind until calcium moves troponin.
_Source: syllabus Biology, Chapter 20, Locomotion and Movement._

Answer

Myoglobin

Answer

Tropomyosin

Answer

Meromyosin

In a resting muscle, which protein subunit hides the myosin-binding sites on actin?

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