NURSING ANM AND GNM

NURSING EXAM QUESTIONS

BIOCHEMISTRY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What bonds hold the primary structure of proteins together?
A
Hydrogen bonds
B
Ionic bonds
C
Peptide bonds
D
hydrophobic interactions
Explanation: 

Detailed explanation-1: -To reiterate, the primary structure of a protein is defined as the sequence of amino acids linked together to form a polypeptide chain. Each amino acid is linked to the next amino acid through peptide bonds created during the protein biosynthesis process.

Detailed explanation-2: -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-3: -The primary structure is held together by covalent peptide bonds. They are formed during the process of protein biosynthesis, where the amino acids lose one water molecule per reaction to attach to another amino acid. The secondary structure is determined by hydrogen bonds between the main-chain peptide groups.

Detailed explanation-4: -Primary Structure Peptide bonds are amide bonds between the -carboxyl group of one amino acid and the -amino group of another (Fig. 3-1). The result is a planar structure that is stabilized by resonance between the -carboxyl and -amino groups.

Detailed explanation-5: -Peptide bonds and disulfide bonds form the primary structure of proteins. The amino acids in polypeptides are held together bypeptide bonds. Adipeptide is formed by a reaction between the -carboxyl and -amino groups of two amino acids.

There is 1 question to complete.