OBJECTIVE LIFE SCIENCE
MOLECULAR BIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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C=C bond
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peptide bond
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phosphodiester bond
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hydrophobic bond
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Detailed explanation-1: -DNA and RNA are composed of nucleotides that are linked to one another in a chain by chemical bonds, called ester bonds, between the sugar base of one nucleotide and the phosphate group of the adjacent nucleotide.
Detailed explanation-2: -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-3: -A phosphodiester bond is a linkage in which 3’ phosphate group of a nucleoside is linked to the 5’ hydroxyl group of another nucleoside. The direction is always from the 3’ to 5’ in nucleotides. Q. DNA is a polymer of nucleotides which are linked to each other by 3-5 phosphodiester bond.