The "cocking" of the myosin heads, hydrolysis of ATP, and the power stroke occur during the Blank______ phase of skeletal muscle contraction.Multiple choice question.gatingrelaxationcontractioncoupling

During muscle contraction, the power stroke is the pivoting motion of the myosin head that pulls the actin filament inward to shorten the sarcomere.  Given this, which of the following events most immediately precedes this power stroke motion?A.The binding of ATP to the myosin headsB.The hydrolysis of myosin-bound ATPC.The release of Pi from the myosin headD.The binding of Ca2+ to tropomyosin

The break down of ATP by myosin-ATPase leads to Blank______.Multiple choice question.the cocking of the myosin headtransformation of troponinrecoil of the elastic fibersshortening of actin chains

The form of myosin in slow-twitch muscle fibers causes the muscle fibers to contract more Blank______.Multiple choice question.slowlyquickly

During skeletal muscle contraction, calcium binds to Blank______.Multiple choice question.ATPtropomyosintroponinactin

During muscle contraction, each Blank______ monomer has an open active site to bind with the protein myosin.Multiple choice question.troponintropomyosinG-actin