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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
What are the rungs of the “DNA ladder” made of?
The three sketch (A, B and C) are intended to represent the replication of DNA.
What should be their correct sequence, starting with the first and ending with the last? ……
Fill in the blank:
DNA replicates in the ______ of the cell cycle.
State whether the following sentence is true or false:
Genes are arranged in a linear order on a chromosome.
Choose the correct answer :
Adenine is a __________
Multiple Choice Question:
The molecular knives of DNA are _______.
What happened when heat-killed S-cells along with living R-cells were injected into mice?
Name the bond which binds the nucleotides in a DNA.
Write the functions of DNA.
