Multiple ChoiceWhich two proteins slide past each other in the sliding filament theory of muscle contraction?129views
Multiple ChoiceWhat is the area in the center of the A band where there are no actin myofilaments?144views
Multiple ChoiceWhat is the consequence if the myosin heads cannot bind to the actin during muscle contraction?134views
Multiple ChoiceWhich of the following is most directly required to initiate the coupling of myosin to actin in the sliding filament theory?129views
Multiple ChoiceWhat is the role of calcium in the cross-bridge cycle during muscle contraction?255views
Multiple ChoiceWhich of the following best describes the term 'Z line' in the context of the sliding filament theory and the sarcomere?102views
Multiple ChoiceIn the sliding filament theory, what causes the myosin head to disconnect from actin?165views
Multiple ChoiceWhat happens when a myosin head releases from actin during muscle contraction?156views
Multiple ChoiceWhat happens when troponin and tropomyosin block the active sites of actin in the sarcomere?191views
Multiple ChoiceIn the context of sliding filament theory, what is the basic functional (contractile) unit of skeletal muscle?3views
Multiple ChoiceIn the sliding filament theory, a myosin head binds to which molecule to form a cross bridge?140views