During muscle contraction, which step follows immediately after Ca2+ binds to troponin?
Correct answer C. Tropomyosin gets removed from the binding sites of actin filaments
Explanation
Calcium binding changes the shape of troponin, which pulls the attached tropomyosin strand away from the myosin-binding sites on actin so cross-bridges can then form.
Answer checked How we write and check questions
Discussion