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प्रश्न
Mention two important functions of nucleic acids.
उत्तर
The two main functions of nucleic acids are:
- DNA is responsible for transmission of hereditary effects from one generation to another. This is due to its unique property of replication, during cell division and two identical DNA strands are transferred to the daughter cells.
- DNA and RNA are responsible for the synthesis of all proteins needed for the growth and maintenance of our body. Actually, the proteins are synthesized by various RNA molecules (r-RNA, m-RNA) and t-RNA) in the cell, but the message for the synthesis of a particular protein is coded in DNA.
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संबंधित प्रश्न
Write the structure of a nucleoside
Which of the following NOT present in DNA?
(a) adenine
(b) Guanine
(c) Thymine
(d) Uracil
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
What are nucleic acids?
Draw the structures of adenine.
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.
Name the purine bases and pyrimidine bases present in RNA and DNA.
The presence or absence of hydroxyl group on which carbon atom of sugar differentiates RNA and DNA?
In both DNA and RNA, heterocyclic base and phosphate ester linkages are at ____________.
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?
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.
Which of the following is not a protein?
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.
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?
