Which of the following step occurs immediately after binding of Ca2+ with troponin molecule during muscle contraction.

A. Binding sites of actin get attached to the myosin head.
B. Troponin uncovers the actin binding sites.
C. Tropomyosin gets removed from the binding sites of actin filaments.
D. Ca2+ goes back inside sarcoplasmic reticulum.

Correct Answer: Tropomyosin gets removed from the binding sites of actin filaments. ✔

Last Updated: October 05, 2021