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Question 69

Inside a contracting muscle fibre, which pair of filaments interacts by sliding to generate force?

  1. Calcium and phosphate
  2. Collagen and keratin
  3. Actin and myosinCorrect answer
  4. Oxygen and nitrogen

Explanation

Actin and myosin form interacting filament systems whose relative sliding produces contractile force. The filaments do not vanish during contraction, and neither protein is a mineral component of bone.

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Question 69: Inside a contracting muscle fibre, which pair of filaments… · Human Body Systems · Questena