Multiple Choice
Refer to the figure showing molecules found in sarcomeres. 
Which statement about the structures shown in the figure is true?
A) Structure 1 has ATPase activity.
B) Structure 2 blocks myosin-binding sites.
C) Structure 3 has one subunit that binds myosin.
D) Structure 4 shortens in length as the sarcomere contracts.
E) Structure 5 binds calcium.
Correct Answer:
Verified
Correct Answer:
Verified
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