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प्रश्न
Give scientific reasons:
On complete hydrolysis DNA gives equimolar quantities of adenine and thymine.
Why on complete hydrolysis DNA gives equimolar quantities of adenine and thymine?
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उत्तर
- Both the strands of DNA double helix are complementary to each other.
- That is a number of bases on each strand are equal and complementary to each other.
- As adenine pairs with thymine; the number of adenine bases on one strand and thymine on another are equal in number.
Thus, on complete hydrolysis DNA gives equimolar quantities of adenine and thymine.
संबंधित प्रश्न
The following statement applies to DNA only, some to RNA only, and some to both. Label them accordingly.
The polynucleotide is double stranded. (_______)
The following statement applies to DNA only, some to RNA only, and some to both. Label them accordingly.
The polynucleotide contains D-ribose. (_______)
Write the sequence of the complementary strand for the following segment of a DNA molecule.
5' - CGTTTAAG - 3'
The sugar component of nucleotide unit in RNA is _________________
Write the name of the base present in DNA but not found in RNA.
Define the following term.
nucleoside
Draw structure of following.
2-Deoxy-D-ribose
Draw structure of following.
Cytosine
An example of feedback inhibition is ______.
Identify the INCORRECT match.
In an experiment, DNA was found to have 31 % adenine and 19% guanine. Identify the percentage of cytosine in the given molecule of DNA.
In which of the following RNA is genetic material?
Purine derivative among the following bases is ____________.
Which of the following is not present in DNA?
The correct statement regarding RNA and DNA respectively is ____________.
The pyrimidine bases present in DNA are ____________.
What type of linkages holds together monomers of DNA?
Write a note on the formation of α-helix.
If Adenine makes 30% of the DNA molecule, what will be the percentage of Thymine, Guanine, and Cytosine in it?
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 ______.
Give names of the purines.
Draw a neat diagram for the following:
AMP
Which of the following is not present in a nucleotide?
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
Name two kinds of nucleic acids.
Identify the INCORRECT statement regarding nuclein.
Match List - I with List - II.
| List - I | List - II |
| A. Adenosine | I. Nitrogen base |
| B. Adenylic acid | II. Nucleotide |
| C. Adenine | III. Nucleoside |
| D. Alanine | IV. Amino acid |
Choose the option with all correct matches.
