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When the cross bridge of myosin molecule forms linkages with actin filaments what is the result is?
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When the cross-bridge of the myosin molecule form linkage with actin filaments the result s what?
shortening of the muscle fiber
What molecule directly supplies energy to myosin to allow the filaments to contract?
ATP
The larger of the two filaments forming a cross-bridge is made of a protein called?
Myosin
What are the thick protein filaments in the cell made of?
The thick filament is composed of the myosin molecule. The thin filament is composed of the actin molecule. Flexing the head of myosin provides the powerstroke.
What protein makes up the thick filaments of myofibrils?
Myosin makes up the THICK filaments, and actin makes up the thin filaments of myofibrils.
The thick filaments of muscle fibers are composed of what?
Myosin
What are the names of protein filaments in a muscle fiber?
Actin Filaments
What is composed of myosin?
Thick Filaments
Thick protein filaments within the A-bands?
Myosin. The A band has thick (myosin) and thin (actin) filaments.
Which Muscle movement in myosin heads of the thick filaments pull on the thin filaments causing the thin filaments to slide toward the center of the sarcomere?
Flexing of the cross bridge (power stroke)
Which proteins found myofilaments contains the cross bridge?
The two muscle filaments are Myosin and Actin. Myosin is the thicker of the two. When a muscle contracts, a hook like particle extends off the myosin and grabs the actin pulling it in causing the contraction/ tension of the muscle
Where is myosin found?
In thick filaments
