BIOLOGY
NUCLEIC ACIDS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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amino acid, fatty acid, base
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monosaccharide, phosphate, base
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sugar, phosphate, base
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None of the above
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Detailed explanation-1: -Nucleotides are the building blocks of DNA and RNA. Each nucleotide consists of a five-carbon (pentose) sugar, a phosphate group, and one of five different nitrogenous bases.
Detailed explanation-2: -Nucleotide 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). In RNA, the base uracil (U) takes the place of thymine.
Detailed explanation-3: -A molecule consisting of a nitrogen-containing base (adenine, guanine, thymine, or cytosine in DNA; adenine, guanine, uracil, or cytosine in RNA), a phosphate group, and a sugar (deoxyribose in DNA; ribose in RNA).
Detailed explanation-4: -The combination of a sugar phosphate group and a base constitutes anucleotide. The double helix is made from two polynucleotide chains, each of which consists of a series of 5′-to 3′-sugar phosphate links that form a backbone from which the bases protrude.