Question

a protein is made up of a chain of ______.
simple sugars
lipids
amino acids
nucleotides
fatty acids

Explanation:

Proteins are macromolecules. The basic building blocks of proteins are amino acids. Amino acids are linked together by peptide bonds to form a polypeptide chain, and one or more polypeptide chains fold into a specific three - dimensional structure to form a functional protein.

• Simple sugars are the building blocks of carbohydrates.
• Lipids are a diverse group of molecules that include fats, phospholipids, and steroids.
• Nucleotides are the building blocks of nucleic acids (DNA and RNA).
• Fatty acids are components of lipids (such as triglycerides, where three fatty acids are attached to a glycerol molecule).

Answer:

amino acids