Arthropod exoskeletons are composed primarily of
A)chitin.
B)calcium carbonate.
C)collagen.
D)cartilage.
E)sclerotin.

Question

Quizplus · Accepted Answer

Arthropod exoskeletons are primarily composed of chitin, a polysaccharide that provides structural support and protection. Calcium carbonate may also be present in some arthropod exoskeletons, but it is not the primary component. Collagen and cartilage are found in the connective tissues of vertebrates and are not significant components of arthropod exoskeletons. Sclerotin is a protein found in the exoskeletons of certain insects, but again, it is not the primary component of arthropod exoskeletons.

Arthropod Exoskeletons Are Composed Primarily of