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प्रश्न
Assertion (A): The backbone of DNA and RNA molecules is a chain consisting of heterocyclic base, pentose sugar and phosphate group.
Reason (R): Nucleotides and nucleosides mainly differ from each other in the presence of phosphate group.
विकल्प
Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).
Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of Assertion (A).
Assertion (A) is true, but Reason (R) is false.
Assertion (A) is false, but Reason (R) is true.
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उत्तर
Assertion (A) is false, but Reason (R) is true.
Explanation:
The DNA molecule is made up of two strands that spiral around each other like a twisted ladder. Each strand has an alternate backbone of sugar (deoxyribose) and phosphate groups.
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संबंधित प्रश्न
Write the structure of a nucleotide
What type of linkage is present in nucleic acids?
Define the following term:
Nucleotide
Give balanced equations for the following reactions:
Name the nitrogen base residues present in DNA
In both DNA and RNA, heterocyclic base and phosphate ester linkages are at ____________.
Which base is present in RNA, but not in DNA?
DNA and RNA contain four bases each. Which of the following bases is not present in RNA?
Write the important structural differences between DNA and RNA.
Which of the following statements is not true about RNA?
What products would be formed when a nucleotide from DNA containing thymine is hydrolysed?
