Total force in the length:force relationship is the result of a.) ideal overlap between the myosin and actin filaments b.) both active and passive force c.) alpha-actinin binding to the ends of the actin filament d.) diminished calcium release from the sarcoplasmic reticulum e.) none of the above In muscle, Vmax (maximum shortening velocity) and Fmax (maximum active force) are related to: a.) Vmax=filament overlap, Fmax=ATP hydrolysis b.) Vmax = number of attached crossbridges; Fmax = number of attached crossbridges c.) Vmax = number of attached crossbridges; Fmax = ADP release from myosin d.) Vmax = ADP release from myosin; Fmax = number of attached crossbridges In living relaxed muscle: a.) myosin will be in the rigor state b.) myosin is hydrolyzing ATP at its maximum rate c.) myosin will have the ATP or ADP and Pi in the nucleotide binding pocket d.) myosin is strongly attached to actin
Total force in the length:force relationship is the result of
a.) ideal overlap between the myosin and actin filaments
b.) both active and passive force
c.) alpha-actinin binding to the ends of the actin filament
d.) diminished calcium release from the sarcoplasmic reticulum
e.) none of the above
In muscle, Vmax (maximum shortening velocity) and Fmax (maximum active force) are related to:
a.) Vmax=filament overlap, Fmax=ATP hydrolysis
b.) Vmax = number of attached crossbridges; Fmax = number of attached crossbridges
c.) Vmax = number of attached crossbridges; Fmax = ADP release from myosin
d.) Vmax = ADP release from myosin; Fmax = number of attached crossbridges
In living relaxed muscle:
a.) myosin will be in the rigor state
b.) myosin is hydrolyzing ATP at its maximum rate
c.) myosin will have the ATP or ADP and Pi in the
d.) myosin is strongly attached to actin
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