NURSING ANM AND GNM

NURSING EXAM QUESTIONS

BIOCHEMISTRY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What are the building blocks of nucleic acids?
A
Amino acids
B
monosaccharides
C
glycerol and fatty acids
D
nucleotides
Explanation: 

Detailed explanation-1: -A nucleotide is the basic building block of nucleic acids (RNA and DNA). A nucleotide consists of a sugar molecule (either ribose in RNA or deoxyribose in DNA) attached to a phosphate group and a nitrogen-containing base. The bases used in DNA are adenine (A), cytosine (C), guanine (G) and thymine (T).

Detailed explanation-2: -DNA is made up of four building blocks called nucleotides: adenine (A), thymine (T), guanine (G), and cytosine (C). The nucleotides attach to each other (A with T, and G with C) to form chemical bonds called base pairs, which connect the two DNA strands.

Detailed explanation-3: -The phosphate group of one nucleotide and the pentose sugar of the next nucleotide form a covalent bond, which binds the monomers together. This phosphodiester linkage forms the sugar-phosphate backbone of the nucleic acids.

Detailed explanation-4: -Nucleotides are the monomers (building blocks) of nucleic acids.

Detailed explanation-5: -These chemical bonds act like rungs in a ladder and help hold the two strands of DNA together. There are four nucleotides, or bases, in DNA: adenine (A), cytosine (C), guanine (G), and thymine (T). These bases form specific pairs (A with T, and G with C).

There is 1 question to complete.