NURSING EXAM QUESTIONS
BIOCHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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amino acid
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fatty acid & glycerol
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nucleotide
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monosaccharide
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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: -Amino acids are the building blocks of nucleic acids.
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: -DNA is a molecule made up of four chemical bases: adenine (A), cytosine (C), guanine (G), and thymine (T). For the two strands of DNA to zip together, A pairs with T, and C pairs with G.