Q. In the resting state of muscles the troponin
A) Active site on actin filament
B) Terminal site on actin filament
C) Terminal site on actin tropomyosin
D) Middle site on actin tropomyosin
Explanation
In resting state, troponin binds to tropomyosin and masks the binding sites, $Ca^{2 +}$ binds to the troponin and frees the binding sites of troponin so that contraction can proceed
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.