Which of the structures below represents a fat? A monomer made up of a nitrogenous base, a five carbon sugar, and a phosphate group bonded together. A molecule made up of four carbon rings with other atoms bonded to those rings. A glycerol molecule with three fatty acid chains attached to it. A polymer made up of multiple glucose molecules bonded together.

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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many other transport proteins, often called pumps, move materials against a concentration gradient. active transport drives molecules across a membrane from a region of lower concentration to a region of higher concentration. this process, shown in figure 5.1, uses transport proteins powered by chemi- cal energy.