The head of a myosin monomer consists of:I. A | vedclass

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(A) Each myosin (thick filament) is a polymerized protein. Many monomeric proteins called meromyosin constitute one thick filament.Each meromyosin has

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$I$ and $II$

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(A) Each myosin (thick filament) is a polymerized protein. Many monomeric proteins called meromyosin constitute one thick filament.Each meromyosin has two important parts: a globular head with a short arm and a tail. The former is called heavy meromyosin $(HMM)$ and the latter is called light meromyosin $(LMM)$.The $HMM$ component,i.e.,the head and short arm,projects outwards at a regular distance and angle from the surface of the polymerized myosin filament and is called the cross-arm.The globular head acts as an active $ATPase$ enzyme and contains binding sites for $ATP$ and active sites for actin.

The head of a myosin monomer consists of:
$I.$ Actin binding sites
$II.$ $ATP$ binding sites
$III.$ $ADP$ binding sites
$IV.$ $AMP$ binding sites
Select the correct options:

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The central part of the thick filament which is not overlapped by thin filaments is called as:

$A-$ Actin filaments occur in two forms: the monomeric $G$-actin and the polymeric $F$-actin.
$R-$ Tropomyosin is a rod-shaped fibrous protein. Tropomyosin forms two helical strands,which are wrapped around the $F$-actin filaments.

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The head of a myosin monomer consists of:$I.$ Actin binding sites$II.$ $ATP$ binding sites$III.$ $ADP$ binding sites$IV.$ $AMP$ binding sitesSelect the correct options: