How does the basic structure of a steroid differ from other macromolecules such as carbohydrates?

The basic structure of a steroid differs from other macromolecules such as carbohydrates by the four rings the steroids have. Steroids have a four-ring structure while other macromolecules such as carbohydrates don't have. Monosaccharide molecules has only one ring and disaccharide has only two.

The appendicular skeleton supports the attachment and functions of the upper and lower limbs of the human body.