OBJECTIVE LIFE SCIENCE
BIOCHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Between the sugar and the phosphate
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Between adjacent nitrogenous bases
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Between the sugar and the neighboring nitrogenous base
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Between the phosphate and the neighboring nitrogenous base
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Detailed explanation-1: -The phosphate group of one nucleotide bonds covalently with the sugar molecule of the next nucleotide, and so on, forming a long polymer of nucleotide monomers. The sugar–phosphate groups line up in a “backbone” for each single strand of DNA, and the nucleotide bases stick out from this backbone.
Detailed explanation-2: -The type of bond that holds the phosphate group to the sugar in DNA’s backbone is called a phosphodiester bond. Hydrogen bonds connect bases to one another and glycosidic bonds occur between deoxyribose groups and the base groups.
Detailed explanation-3: -Phosphodiester bonds are central to all life on Earth, [fn 1] as they make up the backbone of the strands of nucleic acid. In DNA and RNA, the phosphodiester bond is the linkage between the 3’ carbon atom of one sugar molecule and the 5’ carbon atom of another, deoxyribose in DNA and ribose in RNA.
Detailed explanation-4: -Nucleic acids (i.e., DNA and RNA) are made up of nucleotide monomers linked via phosphodiester bonds.