The arthropod exoskeleton is composed of a a. mixture of...

The arthropod exoskeleton is composed of a a. mixture of several kinds of polysaccharides. b. mixture of several kinds of proteins. $c .$ single complex polysaccharide called chitin. $d$. single complex protein called arthropodin. $e .$ mixture of layers of proteins and a polysaccharide called chitin.

The arthropod exoskeleton is composed of a
a. mixture of several kinds of polysaccharides.
b. mixture of several kinds of proteins.
$c .$ single complex polysaccharide called chitin.
$d$. single complex protein called arthropodin.
$e .$ mixture of layers of proteins and a polysaccharide called chitin.

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Key Concepts

Arthropod Exoskeleton

The arthropod exoskeleton is a protective outer covering that provides both support and defense against environmental hazards. It is a complex, composite structure that is not only important for maintaining shape and facilitating movement but also for protection and preventing water loss.

Chitin

Chitin is a long-chain polymer of N-acetylglucosamine and serves as the primary polysaccharide in the exoskeleton. It contributes to the toughness and rigidity of the structure while allowing flexibility, making it an essential biomaterial in many invertebrates.

Composite Biological Materials

Composite biological materials refer to structures that combine different biological molecules, such as polysaccharides and proteins, to achieve unique mechanical properties. In the context of the arthropod exoskeleton, the interplay between chitin and proteins results in a layered structure that maximizes strength, durability, and adaptability.

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