Q. No.Identify the incorrectly matched pair:
Organism
Length of DNA
1. Bacteriophage ϕ 174
5386 base pairs
2. Bacteriophage Lambda
48502 base pairs
3. Escherichia coli
4.6 X 10^6 base pairs
4. Human beings
3.3 X 10^9 base pairs
Which of the following would be nucleoside found only in RNA?
1. Thymidine
2. Cytidine
3. Uridine
4. Adenosine
In a strand of a nucleic acid. Two nucleotides are linked together by:
1. 3’ – 5’ phosphodiester bond
2. 5’ – 3’ phosphodiester bond
3. 2’ – 5’ phosphodiester bond
4. 3’ – 1’ phosphodiester bond
What is another name for thymine?
1. 5 – bromouracil
2. 3 – bromouracil
3. 3 – methyl uracil
4. 5 – methyl uracil
Watson and Crick based their model of DNA on X-ray diffraction data produced by:
1. Hershey and Chase
2. Marie Curie and Pierre Curie
3. Franklin and Wilkins
4. Meselson and Stahl
In prokaryotes:
1. A typical nucleus is not seen and DNA is scattered throughout the cell
2. A typical nucleus may sometimes be present and DNA is scattered throughout a cell
3. A typical nucleus is not seen but DNA is not scattered throughout the cell
4. A typical nucleus may sometimes be present but DNA is not scattered throughout the cell
Histones are rich in amino acids:
1. Arginine and Lysine
2. Argine and Leucine
3. Arginine and Isoleucine
4. Aspartate and Glutamate
A typical nucleosome unit consists of about:
1. 60 base pairs
2. 140 base pairs
3. 200 base pairs
4. 400 base pairs
During DNA packaging in eukaryotic cells, Non Histone Chromosomal proteins:
1. Are not required
2. Are required from the beginning to the end of packaging
3. Are required only for earlier stages of packaging
4. Are required for higher level of packaging
Frederick Griffith discovered:
1. DNA is the genetic material
2. RNA can be the genetic material
3. Sterptococcus has two strains
4. Bacterial transformation
© 2026 GoodEd Technologies Pvt. Ltd.