Identify the thick myofilament from the given contractile proteins.
A
Troponin
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B
Myosin
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C
Tropomyosin
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D
Actin
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Solution
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. Actin
filaments are thinner as compared to the myosin filaments, hence are
commonly called thin and thick filaments respectively
Each myosin (thick filament) is made up of Many monomeric proteins called Meromyosins.
Hence the thick myofilament from the given contractile proteins is myosin.