Question

Question 7 (Mandatory) (4 points) What causes myosin heads to grab actin and pull it inwards during the cross-bridge cycle of skeletal muscle contraction? Choose the best answer. ATP hydrolysis pulls back the Myosin heads into the cocked position Calcium binds to Troponin which rotates Tropomyosin When Tropomyosin rotates it exposes the myosin-binding sites on Actin All of the above

          Question 7 (Mandatory) (4 points)
What causes myosin heads to grab actin and pull it inwards during the cross-bridge
cycle of skeletal muscle contraction? Choose the best answer.
ATP hydrolysis pulls back the Myosin heads into the cocked position
Calcium binds to Troponin which rotates Tropomyosin
When Tropomyosin rotates it exposes the myosin-binding sites on Actin
All of the above

Question 7 (Mandatory) (4 points)
What causes myosin heads to grab actin and pull it inwards during the cross-bridge
cycle of skeletal muscle contraction? Choose the best answer.
ATP hydrolysis pulls back the Myosin heads into the cocked position
Calcium binds to Troponin which rotates Tropomyosin
When Tropomyosin rotates it exposes the myosin-binding sites on Actin
All of the above

Added by Sharon B.

Biology for AP Courses

Julianne Zedalis, John Eggebrecht

Instant Answer

Solved by Expert Sri K

06/06/2023

Step 1

Step 1: ATP hydrolysis pulls back the Myosin heads into the cocked position. Show more…

Show all steps

Thanks for your feedback!

Question 7(Mandatory)4 points) What causes myosin heads to grab actin and pull it inwards during the cross-bridge cycle of skeletal muscle contraction? Choose the best answer. ATP hydrolysis pulls back the Myosin heads into the cocked position Calcium binds to Troponin which rotates Tropomyosin When Tropomyosin rotates it exposes the myosin-binding sites on Actin All of the above