Question 1. During contraction of a muscle, .......... bind to ......... This moves .......out of the way and uncovers ....... for ...... on the ........
Question 2. What molecules are attached to the myosin head from the previous cycle of movement?
Question 3. How are cross-bridges formed? What is released in the process?
Question 4. How is the myosin head moved? What does this cause? What is released from the myosin head when this occurs?
Question 5. How is the bond between the actin and myosin filaments broken? How is energy released? What happens to this energy?
Question 6. After the myosin head returns to its upright position, what occurs if calcium ions are still present?