Myosin is the:
Correct answer: C. Thick filament
- A. The thin filament
- B. Both
- C. Thick filament
- D. None
Explanation
The thick filament consists largely of myosin. Six proteins make up myosin: two heavy chains whose tails intertwine to form a supercoil and whose heads contain actin binding sites and a catalytic site for ATP hydrolysis. Two myosin light chains bind to each head region.
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About Support and Movement
Support and movement covers the axial and appendicular skeleton, bone structure, joints and the arrangement of skeletal muscles. Muscle contraction is explained through actin, myosin, sliding filaments, calcium ions and ATP, while arthritis is distinguished as a disorder of joints rather than a normal part of movement.
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