What Is the Correct Order of Events in the Sliding

question 100

Multiple Choice

What is the correct order of events in the sliding filament theory of muscle contraction? 1.Myosin head binds to actin
2) Calcium ions bind to troponin
3) Myosin cross-bridges bend,pulling actin toward center of sarcomere
4) ATP is split into ADP and P
5) Tropomyosin moves to expose active sites of actin
6) Sarcoplasmic reticulum releases calcium ions
7) ADP and P released from myosin

• A)2,4,6,1,3,5,7
• B)1,2,3,4,5,6,7
• C)6,2,5,4,1,7,3
• D)4,2,7,1,6,5,3

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