What happens during contraction of skeletal muscle fibres?
A) Contractile proteins contract.
B) Thin filaments slide inward toward the A band's centre as a result of cycles of cross-bridge binding and bending.
C) Thick and thin filaments become tightly coiled, thus shortening the sarcomere.
D) I bands slide in between the A bands.
Correct Answer:
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Q19: Which characteristics are shared by all three
Q20: Which statement concerning myosin is correct?
A) It
Q21: Which statement concerning the H zone is
Q22: Which of the following events happens during
Q23: What happens during muscle contraction?
A) The contractile
Q25: Which statement is correct for the T
Q26: Which statement concerning cross bridges is correct?
A)
Q27: What happens during a cross-bridge cycle in
Q28: Which statement is NOT characteristic of cross
Q29: The sarcoplasmic reticulum stores which substance when
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