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Myosin and Actin are contractile proteins that make up the sarcomeres, the contractile components of myofibrils, which make up skeletal and cardiac muscle.
Wiki User
∙ 13y ago
Wiki User
∙ 13y agoa band
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Are myosin filaments located in an A band?
Thick - it is the length of myosin.
Which of the following become connected by myosin cross-bridges during muscle contraction A) thin filaments and thick filaments B) thin filaments and t-tubules C) thick filaments and titin filame?
Interactions between actin and myosin filaments of the sarcomere are responsible for muscle contractions. The I bands contain only thin (actin) filaments, whereas the A bands contain thick (myosin) filaments.
What are two myofilaments that slide past one another to allow muscle cells to contract?
Actin and Myosin
What molecule directly supplies energy to myosin to allow the filaments to contract?
ATP
Does Tropomyosin molecules move and expose specific sites on myosin filaments?
true
Where is myosin found?
In thick filaments
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.
What are the thin filaments in striated muscle?
Actino myosin is the thin protein found in muscles.
Are myosin filaments located in an A band?
Thick - it is the length of myosin.
What are actin and myosin and are they organized iin a muscle?
Thick filaments are made of the protein myosin and thin filaments are made of the protein actin. Myosin and actin filaments are arranged to form and overlapping pattern which gives muscle tissue its striated appearance.
Do myosin filaments outnumber actin filaments in skeletal muscles?
No. 2 to active
Which of the following become connected by myosin cross-bridges during muscle contraction A) thin filaments and thick filaments B) thin filaments and t-tubules C) thick filaments and titin filame?
Interactions between actin and myosin filaments of the sarcomere are responsible for muscle contractions. The I bands contain only thin (actin) filaments, whereas the A bands contain thick (myosin) filaments.
What are the types of proteins contained in myofibrils?
In the thin filaments of miofibrils, actin is the primary protein. In the thick filaments, myosin is the primary protein.Troponin, Tropomyosin, myosin.
