Multiple ChoiceIn the sliding filament theory, what substance causes the actin filament to change shape, allowing myosin to bind?111views
Multiple ChoiceWhat generates the force that shortens the sarcomeres to bring about muscle contraction?137views
Multiple ChoiceAccording to the sliding filament model, binding sites on actin open when which of the following occurs?65views
Multiple ChoiceWhich of the following proteins makes up the thick filament of the sarcomeres?128views
Multiple ChoiceWhich two proteins slide past each other in the sliding filament theory of muscle contraction?108views
Multiple ChoiceWhat is the area in the center of the A band where there are no actin myofilaments?124views
Multiple ChoiceWhat is the consequence if the myosin heads cannot bind to the actin during muscle contraction?120views
Multiple ChoiceWhich of the following is most directly required to initiate the coupling of myosin to actin in the sliding filament theory?107views
Multiple ChoiceWhat is the role of calcium in the cross-bridge cycle during muscle contraction?229views
Multiple ChoiceWhich of the following best describes the term 'Z line' in the context of the sliding filament theory and the sarcomere?79views
Multiple ChoiceIn the sliding filament theory, what causes the myosin head to disconnect from actin?142views