Mark the option which is not a component of $I - b a n d$ in a skeletal muscle fibre?

Actin

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Troponin

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Meromyosin

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Tropomyosin

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Solution

The correct option is C Meromyosin
Meromyosin is a part of myosin (mero meaning "part of"). With regards to human anatomy myosin and action constitute the basic functional unit of a muscle fiber, called sarcomere, playing a role in muscle contraction.
So the correct option is ' Meromyosin'.

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upon contraction of sarcomere in skeletal muscle fibres , reduction is not observed in?

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