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प्रश्न
Give names of the purines.
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उत्तर
Adenine and Guanine
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संबंधित प्रश्न
Give scientific reasons:
On complete hydrolysis DNA gives equimolar quantities of adenine and thymine.
The following statement applies to DNA only, some to RNA only, and some to both. Label them accordingly.
The polynucleotide contains uracil. (________)
Write the sequence of the complementary strand for the following segment of a DNA molecule.
5' - CCGGTTAATACGGC - 3'
Draw a neat diagram for the following:
dAMP
Write the name of the base present in DNA but not found in RNA.
Sugar present in DNA is ___________
Identify the INCORRECT match.
In 1924, Feulgen showed that ______ contain DNA.
DNA differs from RNA in ______.
____________ bonds are absent in DNA.
What is the number of \[\begin{array}{cc}\\\backslash\phantom{.......}\\\phantom{}\ce{C = O}\\/\phantom{........}\end{array}\] groups present in nitrogen bases of nucleic acids, thymine and uracil respectively?
The correct statement regarding RNA and DNA respectively is ____________.
Write a note on the formation of α-helix.
Building block of nucleic acid is ______.
When you take cells or tissue pieces and grind them with an acid in a mortar and pestle, all the small biomolecules dissolve in the acid. Proteins, polysaccharides and nucleic acids are insoluble in mineral acid and get precipitated. The acid soluble compounds include aminoacids, nucleosides, small sugars etc. When one adds a phosphate group to a nucleoside, one gets another acid soluble biomolecule called ______.
Draw a neat diagram for the following:
AMP
The following ratio is generally constant for a given species
Watson and Crick (1953) proposed DNA double helix model and won the Nobel Prize; their model of DNA was based on:
- X-ray diffraction studies of DNA were done by Wilkins and Franklin.
- Chargaff’s base equivalence rule
- Griffith's transformation experiment
- Meselson and Stahl's experiment
Which of the following statements are correct?
- In animals, the causative agent of foot and mouth disease in single stranded RNA Aphthovirus.
-
In animals foot and mouth disease spreads by direct or indirect contact.
-
Anthrax is a disease of domestic animals caused by Bacillus anthracis.
-
Rinderpest is a contagious bacterial disease of cattle.
Write the structure of D-ribose.
Define the Nucleic acids.
What are the nucleotides?
Which chemical linkage is responsible for joining two distinct nucleotides together to form a polynucleotide chain?
Which application of nucleic acid principles is used for personal identification and forensic investigation?
Which nitrogenous bases are classified as purines?
