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Question 4
The diagram shows a model of the hierarchical organization of the muscular system.
Which of these best explains the next level of organization in this model?
muscle cells, because they contain protein
A
B
C
D
Muscular Organ
System
mitochondria, because they produce energy for movement
muscle cells, because they are the smallest living unit in the body
mitochondria, because they are smaller than cells and have membranes
Muscular Tissue