Bond present between two nucleotides of a polynucleotide is

Covalent bond

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Hydrogen bond

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Phosphodiester bond

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High energy phosphate bond

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Solution

The correct option is C Phosphodiester bond

The sugars which are present in the nucleotide are ribose or deoxyribose. The nitrogenous bases are purines and pyrimidines. The phosphate is present as phosphoric acid. The nucleotide is formed by the union of a phosphate group with a nucleoside. A nucleoside, in fact, contains a sugar molecule along with an organic nitrogenous base. Two nucleotides are attached by the phosphodiester bond formed by linkage of 3' carbon atom of one sugar molecule and the 5' carbon atom of another, deoxyribose in DNA and ribose in RNA.
So, the correct answer is option B.

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Similar questions

Q. Bond between phosphate and sugar in a nucleotide is

Q. A phosphate unit is present between two sugars. The number of bonds present in phosphate unit is/are :

Q. Match the following and find the correct option.

$I$	$I I$
$(a)$ Hydrogen bond	$(i)$ Adenine - deoxyric base
$(b)$ N-glycosidic linkage	$(i i)$ Glucose - Fructose
$(c)$ Phosphodiester bond	$(i i i)$ Leucine - Glycine
$(d)$ Peptide bond	$(i v)$ Nucleotide - Nucleotide in polynucleotide chain
	$(v)$ Guanine - Cytosin on opposite strands of DNA

The reaction where a phosphate groups bond to a nucleotides to form a nucleic acid molecule is known as ___.

Regarding the assertion and reason, select the correct option.

Assertion [A]: A polynucleotide chain exhibits polarity.
Reason [R]: At one end of the polynucleotide chain, a phosphate group is found attached to the fifth (5’) carbon of the sugar ring (of the respective nucleotide), and at other end, a free 3’ -OH group is present.

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