Tag: skeleton and movements

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Multiple choice zoology skeleton and movements contractile protein structure of muscle muscles and their structure

Major protein in thick filaments of skeletal muscle fibre is?

  1. Myosin

  2. Actin

  3. Tropomyosin

  4. Troponin
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A Correct answer
Explanation

  • The main contractile components of a muscle fibre include:
  •  Thick filaments - The major protein of a thick filament is myosin. 
  • Thin filaments - The major proteins of a thin filament include actin, as well as troponin and tropomyosin. Hence, Major protein in thick filaments of skeletal muscle fibre is myosin.
So, the correct answer is 'myosin'.