NURSING ANM AND GNM

NURSING EXAM QUESTIONS

BIOCHEMISTRY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The bond between amino acids within a protein chain is called a ____
A
peptide bond
B
hydrogen bond
C
ionic bond
D
sulfur bridge
Explanation: 

Detailed explanation-1: -Within a protein, multiple amino acids are linked together by peptide bonds, thereby forming a long chain. Peptide bonds are formed by a biochemical reaction that extracts a water molecule as it joins the amino group of one amino acid to the carboxyl group of a neighboring amino acid.

Detailed explanation-2: -A peptide bond, also referred to as an amide bond, is formed between the -nitrogen atom of one amino acid and the carbonyl carbon of a second (diagrammed below). So-called isopeptide bonds refer to amide bonds between sidechain amines or carbonyl carbons on the side chain rather than -amine or -carbonyl.

Detailed explanation-3: -Peptide bond: A covalent bond joining the -amino group of one amino acid to the carboxyl group of another with the loss of a water molecule.

Detailed explanation-4: -… A peptide is a short chain of amino acids (typically 2 to 50) linked by chemical bonds (called peptide bonds). A longer chain of linked amino acids (51 or more) is a polypeptide.

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