Tropomyosin and Troponin Regulation:
Why is Ca2+ important to the process of sarcomere shortening?
A. Ca2+ binds to the troponin complex, which results in exposure of the myosin binding sites on actin.
B. Ca2+ moves the tropomyosin molecule, which results in exposure of the myosin binding sites on actin.
C. Ca2+ binds to the phosphate and helps to remove it from the myosin head.
D. Ca2+ is a cofactor in the binding and hydrolysis of ATP.
Frequently Asked Questions
What scientific concept do you need to know in order to solve this problem?
Our tutors have indicated that to solve this problem you will need to apply the Muscle Contractions concept. You can view video lessons to learn Muscle Contractions. Or if you need more Muscle Contractions practice, you can also practice Muscle Contractions practice problems.