Q. Read the statements regarding muscle proteins. Actin is a thin filament and is made up of two F-actins. The complex protein, tropomyosin is distributed at regular inervals of troponin. Myosin is a thick filament which is also a polymerized protein. The globular head of meromyosin consists of light meromyosin (LMM). Which of the above statements are correct?
A) I,II and III
B) I, II and IV
C) I and III
D) II and IV
Explanation
Tropomyosin is fibrous molecule that attaches to F-actin in the groove between its filaments. Troponin T binds to tropomyosin as well as to troponin I and troponin C.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.