A chain of small units of globular actin make up Blank______.Multiple choice question.tropomyosinF actintroponinmyosin

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

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

ross-bridges form between binding sites on actin myofilaments and __________.Multiple Choicetroponintropomyosincalcium ionsmyosin heads

The Blank______ is the basic structural and functional unit of skeletal muscle.Multiple choice question.sarcolemmasarcomeremyofibrilmyosin filament

The actin-myosin bond is broken by the binding of __________ to the myosin head.Multiple ChoiceATPphosphateADPtropomyosin