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प्रश्न
Label the parts of the DNA in the diagram given below. Explain the structure briefly.
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उत्तर
DNA is the hereditary material as it contains genetic information. DNA is a large molecule, consisting of millions of nucleotides. Each nucleotide consists of three compounds.
Nucleotides in a DNA
(a) A sugar molecule – Deoxy Ribose sugar
(b) A nitrogenous base [Purines and Pyrimidines]
- Purines (Adenine and Guanine)
- Pyrimidines (Cytosine and Thymine)
(c) A phosphate group Nucleoside and Nucleotide:
Nucleoside = Nitrogen base + sugar
Nucleotide = Nucleoside + Phosphate
The nucleotides are formed according to the purines and pyrimidines present in them.
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संबंधित प्रश्न
DNA strands are made up of phosphate groups, pentose sugar and four types of ______ bases.
State whether the following sentence is true or false:
In any specimen of DNA, the total molar amount of A + G = T+ C.
A structure not present in all chromosomes is ______.
Choose the correct answer :
Which of these is not present in DNA?
Multiple Choice Question:
The molecular knives of DNA are _______.
____________ were used by Friedrich Miescher for his experiments.
Through which of the following experiments DNA was proved to be the genetic material in E. coli and bacteriophage?
In glycolysis how many NADH molecules are produced during the conversion of one glucose molecule to yield two molecules of pyruvate?
According to Watson and Crick's model, approximately how many base pairs are found per turn of the DNA helix?
Bacteriophage φX174 is notable for having one of the smallest known viral genomes. Approximately how many nucleotides does it contain?
