Twisting around the actin chains there are two strands of another protein:
Correct answer: B. Tropomyosin
- A. Myosin
- B. Tropomyosin
- C. Troponin
- D. Creatine
Explanation
The actin molecules are arranged in two chains that twist around each other like a twisted double strand of pearls.Twisting around the actin chains are two strands of another protein, tropomyosin.
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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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