Seth purchased five pounds of live crayfish and realized that the outer shells were made of a tough carbohydrate similar to that used to make the carapace of a cockroach. What do you think the outer shells of the crawfish are made of?  

A.  Glycogen
B.  Chitin
C.  Amylopectin
D.  Cellulose
E.  Fibrin


B.  Chitin

Biology & Microbiology

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