ATP is needed in muscle contraction to

  1. open T-tubules
  2. release ACh
  3. detach the myosin head from actin and re-cock it
  4. bind Ca²⁺ to troponin
Answer

C) detach the myosin head from actin and re-cock it

ATP breaks cross-bridges. AS & A Level Biology · Topic 15 Control and Coordination · 15.1 Control and coordination in mammals

Biology MCQ · More A Level Biology: Control and coordination MCQs · Practise