Advertisements
Advertisements
प्रश्न
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.
उत्तर
Complete hydrolysis of DNA (or RNA) yields a pentose sugar, phosphoric acid and nitrogen-containing heterocyclic compounds (called bases). In DNA molecules, the sugar moiety is β-D-2-deoxyribose whereas in RNA molecule, it is β-D-ribose.
Two nucleic acid chains are wound about each other and held together by hydrogen bonds between pairs of bases. The two strands are complementary to each other because the hydrogen bonds are formed between specific pairs of bases.
Double strand helix structure for DNA
APPEARS IN
संबंधित प्रश्न
What are three types of RNA molecules which perform different functions?
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 base is present in RNA, but not in DNA?
Which of the following bases is not present in 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?
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.
State the functions of RNA and DNA.
