SSC
BIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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What are the three components of a nucleotide?
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sugar, hydrogen, nitrogen base
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sugar, oxygen, nitrogen base
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sugar, phosphate, nitrogen base
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sugar, phosphate, protein
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Explanation:
Detailed explanation-1: -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-2: -Deoxyribonucleic acid (DNA) is made up of sugar, a nitrogenous base and a phosphate group (Figure 1.2). The combination of these molecules makes the building blocks for the DNA synthesis.
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