A Monomer is an individual unit that can be put together to make larger structures. Thus, the correct option is A.
What is Monomer?
A monomer may be defined as a unit of a molecule that can be bonded together to construct a very large molecule known as a polymer.
The monomeric units of nucleic acids are together linked by a glycosidic linkage to form a molecule with a large structural arrangement known as a polymer.
Similarly, the monomeric units of protein are together linked by a peptide linkage to construct a large protein via amino acids.
Therefore, a Monomer is an individual unit that can be put together to make larger structures. Thus, the correct option is A.
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