BIOLOGY
NUCLEIC ACIDS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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6
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9
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12
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cannot be determined
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Detailed explanation-1: -The 5-carbon sugar (known as a pentose) includes ribose and deoxyribose, which are present in nucleic acid. Both ribose and deoxyribose have five carbon atoms and one oxygen atom.
Detailed explanation-2: -A nucleotide is composed of a nitrogenous base, and a phosphate group, but is not composed of a six carbon sugar.
Detailed explanation-3: -The term “deoxy” refers to the fact that there is no oxygen attached to the 2’ carbon atom. There is a molecule that is similar to DNA but has an oxygen atom at this position. Its sugar is therefore called ribose and its name is ribonucleic acid or RNA. The base group is attached to the 1’ carbon.
Detailed explanation-4: -A nucleotide is composed of three distinctive chemical sub-units: a five-carbon sugar molecule, a nucleobase (the two of which together are called a nucleoside), and one phosphate group.