Question

What is the bond between two amino acids in a protein called?
(A) Easter bond
(B) Glycosidic bond
(C) Peptide bond
(D) Phosphodiester bond

Answer 1

Hint : To answer this question, we first need to understand what bonds are. A chemical bond is a long-term attraction between atoms, ions, or molecules that allows chemical compounds to form. Ionic bonds are formed by the electrostatic force of attraction between oppositely charged ions, while covalent bonds are formed by the sharing of electrons.

Complete Step By Step Answer:
Amino acids – Amino acids are chemical molecules with amino and carboxyl functional groups as well as a side chain (R group) that is unique to each amino acid. Carbon (C), hydrogen (H), oxygen (O), and nitrogen (N) are the four essential constituents of an amino acid, while extra elements can be present in the side chains of some amino acids. As of 1983, there are approximately 500 naturally occurring amino acids that can be categorized in a variety of ways.
Protein – Protein is a highly complex molecule found in all living things. Proteins have a high nutritional value and play a direct role in the chemical reactions that keep life going. Proteins were identified as important by chemists in the early nineteenth century, including Swedish chemist Jöns Jacob Berzelius, who invented the term protein in 1838, a word derived from the Greek precios, which means "first position." Proteins are species-specific, meaning that one species' proteins differ from those of another. They are also organ-specific; for example, muscle proteins differ from brain and liver proteins within the same organism.
So, we conclude that the bond between two amino acids in a protein is peptide bond.
So, the final answer is option (C) i.e. Peptide bond.

Note :
A peptide bond is an amide type of covalent chemical connection that connects two successive alpha-amino acids along a peptide or protein chain, starting at C1 (carbon number one) and ending at $N_2$ (nitrogen number two). To distinguish it from an isopeptide bond, a different sort of amide bond between two amino acids, it's called a peptide bond.