3. The myosin myofilament can be cleaved into a head and a tail piece. All of the following are accurate in describing the position of myosin in a sarcomere except: I. A-band is the length of myosin myofilament II. A-band contains thin and thick myofilaments III. A-band does not include actin-binding sites A. I and II only B. II and III only C. III only D. I, II, and III E. All of the above
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A-band is the length of myosin myofilament: This statement is true. The A-band corresponds to the length of the thick (myosin) myofilaments. II. A-band contains thin and thick myofilaments: This statement is also true. The A-band contains both thin (actin) and Show more…
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The myosin myofilament can be cleaved into a head and a tail piece. All of the following are accurate in describing the position of myosin in a sarcomere except: I. A-band is the length of myosin myofilament II. A-band contains thin and thick myofilaments III. A-band does not include actin-binding sites A. I and II only B. II and III only C. III only D. I, II, and III E. All of the above
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Which type of myosin contains a single head and can link actin strands to plasma membrane ? A. Myosin I B. Myosin II C. Myosin V D. Myosin VI E. Myosin XIII
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Which of the following best describes the role of myosin II isoforms in different cell types? Myosin II isoforms assemble into filaments in skeletal muscle, cardiac muscle, and smooth muscle cells, but not in non-muscle cells Myosin II isoforms assemble into filaments in skeletal muscle, cardiac muscle, smooth muscle, and non-muscle cells, with different filament configurations, depending on the cell type. Myosin II has contractile functions in different kinds of muscle cells, but not in non-muscle cells. Myosin II forms filaments in skeletal and cardiac muscle, but other myosins are responsible for all the contractility in smooth muscle and non-muscle cells.
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