Refer to the figure showing the components of a sarcomere. 
Which statement about the structures shown in the figure is true?
A) Structure 2 consists of two chains made of monomers.
B) Structure 2 shortens in length as contraction occurs.
C) Structure 1 has a "head" that hydrolyzes ATP.
D) Structure 3 shortens in length as contraction occurs.
E) Structure 4 lengthens as contraction occurs.
Correct Answer:
Verified
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