The group of organic macromolecules that have roles including enzymes, and structural components in cells and always contain nitrogen are proteins.
Proteins are macromolecules that are made up of amino acids. There are different types of proteins, according to their structure and roles. It is used to give strength to the body. It helps in constructing and giving structure to the cells.
Proteins are made up of amino acids. Amino acids are made up of an amine group, an R group, and a carboxylic group. It contains nitrogen.
Thus, the macromolecule is protein.
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