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Locomotion and Movement

are the dark ...

Question

are the dark band and light bands of muscles called actin and myosin?

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Solution

Yes muscle protein actin and myosin

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Q. Assess the statements.
1. A-bands of the muscle is dark and contain myosin.
2. I-bands are the light bands and contain actin.
3. During muscle contraction the A-band contracts.
4. The part between the two Z-lines is called as sarcomere.
5. The central part of thick filament, not overlapped by thin filament, called H-zone.
Of the above statements.

Skeletal muscles contain dark bands which are anisotropic, and are called

Q. Identify the correct statements.

1. A-bands are dark and contain myosin.
2. I-bands are light and contain actin.
3. During the action, A band contracts.
4. The part between two Z-lines is sarcomere.
5. The central part of thin filament, not overlapped by thick filament is the H-zone.

Q. Long, cylindrical, unbranched muscle fibres with light and dark bands are______

Q. Choose the option having all the correct statements:
I. Thin and thick filaments consist of myosin and actin, respectively.
II. The H-zone and I-band consists of only myosin and actin, respectively.
III. A-band contains both actin and myosin.
IV. M-line and Z-line are in the middle of thin and thick filaments, respectively.

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