Biology
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Medium
Question
The most important function of troponin is___________?
A
To bind with actin
B
To bind with tropomyosin.
C
To bind with Ca2+ ions.
D
All of these
✓ Official correct answer
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A
To bind with actin
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B
To bind with tropomyosin.
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C
To bind with Ca2+ ions.
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D
All of these
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Explanation
Troponin performs multiple important functions in muscle contraction, including binding to actin, binding to tropomyosin, and binding to calcium ions (Ca2+), all of which are essential for regulating the exposure of myosin-binding sites.