Most distinguishing feature between skeletal muscle and smooth muscle: (A) Troponin, (B) Tropomyosin, (C) Myosin, (D) Actin
Answer is A. Troponin is the calcium binding protein in the Skeletal muscle. In smooth muscle, calmodulin is the calcium binding protein. (REF: TEXTBOOK OF MEDICAL PHYSIOLOGY GEETHA N 2 EDITION, PAGE NO - 40,59)