NURSING ANM AND GNM

NURSING EXAM QUESTIONS

BIOCHEMISTRY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The monomer of a protein is called ____
A
an amino acid
B
a monosaccharide
C
a fatty acid
D
a nucleotide
Explanation: 

Detailed explanation-1: -For example, proteins are composed of monomers called amino acids. They are linked together to form a polypeptide chain, which folds into a three dimensional (3D) structure to constitute a functional protein (Figure 1).

Detailed explanation-2: -Explanation: Amino acids are the building blocks (or monomers) of a polypeptide chain. The polypeptide chain then gets folded up into a 3D for that is called a protein. Amino acids bond together through an amide condensation reaction to form an Amide bond. This is called a peptide bond in biology.

Detailed explanation-3: -Every amino acid also has another atom or group of atoms bonded to the central atom known as the R group (Figure 1). The name “amino acid” is derived from the fact that they contain both amino group and carboxyl-acid-group in their basic structure. As mentioned, there are 20 amino acids present in proteins.

Detailed explanation-4: -Amino acids are the monomers that make up proteins. Each amino acid has the same fundamental structure, which consists of a central carbon atom, also known as the alpha () carbon, bonded to an amino group (NH2), a carboxyl group (COOH), and to a hydrogen atom.

Detailed explanation-5: -Nucleic acid monomers are called nucleotides; protein monomers are called amino acids; lipid monomers are called fatty acids; and carbohydrate monomers are called monosaccharides (MAH-nuh-SA-kuh-riyd). All types of monomers are organic molecules, meaning that they contain carbon-to-carbon bonds.

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