The thick filaments in a myofibril of muscles are made up of_
Correct answer: D. Myosin
- A. Haemoglobin
- B. Actin
- C. Myoglobin
- D. Myosin
Explanation
Myosin is the protein that constitutes the thick filaments in a myofibril. Myosin molecules have a unique structure that includes a "head" region that interacts with actin during muscle contraction. The thick filaments, composed of myosin molecules, play a crucial role in muscle contraction by interacting with the thin filaments (actin) to generate the force required for movement.
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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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