LIFE SCIENCE

OBJECTIVE LIFE SCIENCE

BIOCHEMISTRY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Nucleic acids bond together via a ____ bond
A
phosphodiester
B
peptide
C
glycosidic
D
hydrolysis
Explanation: 

Detailed explanation-1: -Nucleic acid consists of nucleotide monomer units bound to each other by phosphodiester linkage. A phosphodiester bond is formed between the third carbon atom of one sugar molecule and the 5th carbon of the adjacent sugar molecule.

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: -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-4: -Nucleotides are joined together by phosphodiester linkage between 5′ and 3′ carbon atoms of pentose sugar.

Detailed explanation-5: -A phosphodiester bond occurs between nucleotides, monomers that build nucleic acid, to form the sugar-phosphate backbone. Phosphodiester bond formation occurs by the removal of a water molecule when 2 hydroxyl groups from 2 different sugars bond with a phosphate group, thus it is known as a condensation reaction.

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