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प्रश्न
Which of the following NOT present in DNA?
(a) adenine
(b) Guanine
(c) Thymine
(d) Uracil
उत्तर
(d) Uracil
The heterocyclic bases in DNA are adenine, guanine, cytosine and thymine.
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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 terms:
Nucleotide
Draw the structures of adenine.
Give balanced equations for the following reactions:
Name the nitrogen base residues present in DNA
The presence or absence of hydroxyl group on which carbon atom of sugar differentiates RNA and DNA?
Which one of them is not a protein?
Which base is present in RNA, but not in DNA?
Nucleic acids are the polymers of ______.
DNA and RNA contain four bases each. Which of the following bases is not present in RNA?
Which of the following bases is not present 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 contributes to the double helical structure of DNA?
Write the important structural differences between DNA and RNA.
Which of the following statements is not true about RNA?
Write two differences between DNA and RNA.
Mention two important functions of nucleic acids.
Give a reason for the following observations:
The two strands in DNA are complementary to each other.
What products would be formed when a nucleotide from DNA containing thymine is hydrolysed?
