SCIENCE
GENETIC AND MENDELS LAW OF HEREDITY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Hexose sugar
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Pentose sugar
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No sugar
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None of the above
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Detailed explanation-1: -A nucleotide has three chemically distinct components. One is a heterocyclic compound (nitrogenous base), the second is a monosaccharide (pentose sugar-deoxyribose sugar if it is a DNA and ribose sugar if it is an RNA) and the third a phosphate group.
Detailed explanation-2: -A nucleotide is made up of three components: a nitrogenous base, a pentose sugar, and one or more phosphate groups.
Detailed explanation-3: -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.
Detailed explanation-4: -The pentose sugar in a nucleotide is always in the furanose form. Since it is bonded to a nitrogenous base and a phosphate group, it cannot spontaneously change from the ring form to the straight-chain form.
Detailed explanation-5: -A pentose sugar is a monosaccharide with 5 carbon atoms. Pentose sugars are the deoxyribose sugars, which are part of nucleotides in DNA.