Question

what category of biological molecules does chitin belong? chitin forms the flexible joints of an insects shell because chitin provides the blueprint for insect body plans chitin serves as an insects insulation from their environment because chitin is used for structural support in the insects external skeleton

Explanation:

Chitin is a polysaccharide, a type of carbohydrate. It is a key structural component in the exoskeletons of arthropods like insects, providing structural support.

Answer:

Chitin belongs to the carbohydrate category of biological molecules because chitin is used for structural support in the insect’s external skeleton.