What causes the myosin head to move into the 'cocked' position after it is released from actin? Group of answer choices ADP and Pi release from the myosin head Ca2+ binding to troponin. ATP hydrolysis into ADP and Pi on the myosin head. ATP binding to myosin.
What causes the myosin head to move into the 'cocked' position after it is released from actin? Group of answer choices ADP and Pi release from the myosin head Ca2+ binding to troponin. ATP hydrolysis into ADP and Pi on the myosin head. ATP binding to myosin.
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Question
What causes the myosin head to move into the 'cocked' position after it is released from actin?
Group of answer choices
ADP and Pi release from the myosin head
Ca2+ binding to troponin.
ATP hydrolysis into ADP and Pi on the myosin head.
ATP binding to myosin.
Expert Solution
Introduction
The contraction of muscle occurs due to the interaction of contractile proteins (thin actin and thick myosin filaments) of muscle fibers. The process of muscle contraction is driven by the hydrolysis of ATP.
ATPases are enzymes that catalyze the hydrolysis of ATP to generate ADP and release energy.
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