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Identify the given structure.

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Important Questions on Biomolecules

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_____ bond is present between a nitrogen base and pentose sugar in a nucleoside.
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Read the following statements:

(i) The adjacent nucleotides in a nucleic acid are linked by phosphodiester bonds.

(ii) Uracil is not found in DNA.

(iii) B-DNA has left-handed helical structure with 10 base pairs per turn.

(iv) Pyrimidines are double-ring structures with four nitrogen atoms.

Which of the above statements are correct?

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Purines are nine-membered double-ring nitrogenous bases with nitrogen atoms at