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प्रश्न
Write the important structural differences between DNA and RNA.
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उत्तर
| DNA | RNA |
| The sugar moiety in DNA molecules is β-D-2 deoxyribose. | The sugar moiety in RNA molecules is β-D-ribose. |
| DNA contains thymine (T). It does not contain uracil (U). | RNA contains uracil (U). It does not contain thymine (T). |
| The helical structure of DNA is double-stranded. | The helical structure of RNA is single-stranded. |
| DNA molecules are very large. | RNA molecules are much smaller. |
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संबंधित प्रश्न
Write the structure of a nucleoside
Write the structure of a nucleotide
What are three types of RNA molecules which perform different functions?
What type of linkage is present in nucleic acids?
Define the following term:
Nucleotide
What are nucleic acids?
Give balanced equations for the following reactions:
Name the nitrogen base residues present in DNA
Name the base that is found in nucleotide of RNA only.
In both DNA and RNA, heterocyclic base and phosphate ester linkages are at ____________.
Which base is present in RNA, but not in DNA?
Aldopentoses named as ribose and 2-deoxyribose are found in nucleic acids. What is their relative configuration?
Write the structures of fragments produced on complete hydrolysis of DNA. How are they linked in DNA molecule? Draw a diagram to show pairing of nucleotide bases in double helix of DNA.
Purine derivative among the following bases is ______.
Which of the following statements is not true about RNA?
Mention two important functions of nucleic acids.
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.
