3 Questions
Which molecule is responsible for exposing the myosin binding sites on actin during muscle contraction?
Calcium
What happens to the myosin head during the power stroke?
It pivots and pulls the thin filament
What provides the energy to return the myosin head back to its resting configuration and restart the cross-bridge cycle?
ATP
Test your knowledge of the actin-myosin interaction and the cross-bridge cycle in muscle contraction. Learn about the role of Ca2+ and ATP in the process and understand how the troponin-tropomyosin complex regulates myosin binding.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
