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#Question id: 32390


What happens when Ca²⁺ binds to troponin C?

#Unit 2. Cellular Organization
  1. Troponin I strengthens its hold on actin
  2. Tropomyosin moves away, exposing myosin-binding sites on actin
  3. Myosin filaments shorten, leading to sarcomere contraction
  4. ATP is hydrolyzed directly by troponin

Answer:- Option(s): 2


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