Choose the correct answer and explain why: A train leaves Los Angeles for Portla
ID: 3518524 • Letter: C
Question
Choose the correct answer and explain why:
A train leaves Los Angeles for Portland traveling at 70 mph. The passengers all have some food and drinks. While enjoying their trip, which of the following sequence of molecular events is most likely to occur to the myosin molecules in their skeletal muscles?
a. Actin binding closes the Actin-binding cleft, opens switch-2, accelerates phosphate release,accelerates the myosin powerstroke, and accelerates ADP release.
b. Actin binding opens the Actin-binding cleft, opens switch-1, accelerates phosphate release,slows the myosin powerstroke, and accelerates ADP binding.
c. Actin binding closes the Actin-binding cleft, closes switch-2, accelerates phosphate release, accelerates the myosin powerstroke, and accelerates ADP release.
d. Actin binding opens the Actin-binding cleft, opens switch-2, accelerates phosphate release, slows the myosin powerstroke, and slows ADP release.
e. Actin binding opens the Actin-binding cleft, closes switch-2, accelerates phosphate release, accelerates the myosin powerstroke, and accelerates ADP release.
Explanation / Answer
Correct Answer is E.
Actin binding opens the actin - binding cleft, closes switch- 2 accelerates phosphate release, accelerates the myosin powerstroke, and accelerates ADP release.
Explanation - as this mechanism is for normal muscle movement & no other exercising or exerting movement where describe in question above.
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