Question

Major protein in the thick filaments of skeletal muscle fiber is

• A. Myosin
• B. Actin
• C. Tropomyosin
• D. Troponin

Answer 1

The correct option is A Myosin

• Skeletal muscle fiber is made up of two types of filaments. They are thick filament and thin filament.
  
• Thick filament is made up of a protein called Myosin.
  
• Each myosin (thick filament) is made up of Many monomeric proteins called Meromyosins.
  
• Hence Major protein in the thick filaments of skeletal muscle fiber is Myosin.
• So, the correct answer is 'Myosin'.