Advertisements
Advertisements
प्रश्न
Label the parts of the DNA in the diagram given below. Explain the structure briefly.
Advertisements
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.
APPEARS IN
संबंधित प्रश्न
Fill in the blank:
DNA replicates in the ______ of the cell cycle.
Fill in the blanks:
There are two nucleic acids ______ and ______.
Choose the correct answer :
RNA has uracil instead of ____________
Complete the following sentence with appropriate word:
A chromosome is composed of 50 % DNA and 50% ________.
Multiple Choice Question:
In the RNA molecule, which nitrogen base is found in place of thymine?
How many codons are needed to specify three amino acids?
The ______ units form the backbone of the DNA.
DNA consists of two ______ chains.
A DNA strand with the sequence AACGTAACG is transcribed. What is the sequence of the mRNA molecule synthesized?
