Myosin filaments are close to how many times thick as actin filament?
Correct answer: D. 2
- A. 3
- B. 6
- C. 7
- D. 2
Explanation
Myosin forms thick filaments (16 nm in diameter) and actin forms thinner filaments (7-8 nm in diameter). Hence D is the correct option since it is the closest.
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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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