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H band
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∙ 10y ago
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What makes up a myofibril?
Myofibrils are made up of actin (thin filaments) and myosin (thick filaments).
What is one of the functional units of a myofibril?
sarcomere
What myofibril contains only thick myofilaments?
No, myofibrils contain both thick filaments (myosin) and thin filaments (actin) which when activated overlap each other as part of muscular contraction.
What are thick myofilaments of muscles called?
Actin. Myosin are the thin ones.... it's actually the reverseThe thin filaments are composed primarily by the protein Actin.The thick filaments are composed primarily of the protein Myosin.
Which type of filament is myosin composed of?
Myofilaments Actin, which constitutes about 25 percent of the protein of myofilaments, is the major component of the thin filaments in muscle (per Encyclopedia Britannica Online). Microfilaments Microfilaments or actin filaments are the thinnest filaments of the cytoskeleton found in the cytoplasm of all eukaryotic cells (per Wikipedia Microfilament).
What are the names of protein filaments in a muscle fiber?
Actin Filaments
What is a myofibril made up of?
Actin, myosin
Which section goes into myofibrils organised along muscle fibers?
Myofibrils are composed of proteins such as actin, myosin, titin. These proteins are organized into thin filaments and thick filaments, which repeat along the length of the myofibril in sections called sarcomeres.
What are the filaments of a dynamic skeleton?
Actin filaments
What contains actin filaments?
Microfilaments contain actin filaments. They are the thinnest filaments of the cytoskeleton, which is a structure found in the cytoplasm of eukaryotic cells.
What would enable you to identify the plus end of actin filaments?
add radiolabeled actin subunits to a mixture of actin filaments in which conditions are favorable for polymerization.
Do actin filaments have membranes?
No. They are polymers of actin that form 'filaments'. Membranes in eukaryotic cells are composed of a 'lipid bilayer'
