Each myosin protein has a globular head that extends outward from the myosin filament.Group startsTrue or False

Unflexing of the myosin head requires ATP.Group startsTrue or False

Each thin filament consists ofQuestion 4Select one:a.a double strand of myosin molecules.b.two actin protein strands coiled helically around each other.c.six molecules coiled into a helical structure.d.a rod-shaped structure with "heads" projecting from each end.e.chains of myosin molecules.

When myosin heads attach to actin filaments, ___________ is released.Multiple ChoiceADPATPtropomyosinphosphate

Which of the following happens as actin and myosin filaments slide past each other during muscle contraction?

ctin and myosin fibers in muscle overlap to form loose bundles.