What are the four structures of the joint

Here are 4 structures of the joint

Ball-and-socket joints. Ball-and-socket joints, such as the shoulder and hip joints, allow backward, forward, sideways, and rotating movements.

Hinge joints

Pivot joints

Ellipsoidal joints

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The correct answer for this question is: "Amino acids." The monomer that varies based on the structure of their side chains is the amino acid.

The correct answer for this question is: "C.Steroid." The type of molecule that is represented by the model below: A molecule made up of four carbon rings with other atoms bonded to those rings, is Steroid.

Explanation:

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