Entry Test MCQ :: Support and Movement

@ : Home > Biology > Support and Movement

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.

Answer: Option C