Q. Which of the following statements about the molecular arrangement of actin and myosin are correct? I. Each actin (thin filament) is made up of 2F (filamentous) actins II. F-actin is the polymer of G (globular) actin III. 2F = actins are twisted into a helix IV. Two strands of tropomyosin (protein) lies in the grooves of F-actin The correct option is
A) I and II
B) III and IV
C) I and IV
D) All except IV
Explanation
The correct answer is Option D: All except IV.
A detailed explanation for this question is being prepared.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.