MICROANATOMY

Detailed explanation-1: -As we already know, that meromyosin is a monomer of myosin and an active binding site is present on the head of meromyosin. So, the correct option is C. Meromyosin.

Detailed explanation-2: -Meromyosin is a monomeric protein present in myosin filament. The globular head of the meromyosin contains the actin-binding site. Hence, this is the correct answer.

Detailed explanation-3: -Myosin binds to actin at a binding site on the globular actin protein. Myosin has another binding site for ATP at which enzymatic activity hydrolyzes ATP to ADP, releasing an inorganic phosphate molecule and energy. ATP binding causes myosin to release actin, allowing actin and myosin to detach from each other.

Detailed explanation-4: -So, the correct answer is ‘Head part of meromyosin’.

Detailed explanation-5: -Myosin is a major component of thick filaments. They are composed of a head, neck, and tail domain. The head contains ATPase and has ATP binding sites and active sites for actin (actin binding sites).