Q. No.
The base pairing in a double stranded DNA is correctly described as:
(1) Similar
(2) Identical
(3) Complementary
(4) Synergistic
(1) Similar
(2) Identical
(3) Complementary
(4) Synergistic
If each strand of a ds DNA acts as a template for new strand, the two daughter DNA will be:
(1) Complementary to each other
(2) Identical to the parental DNA
(3) Similar to each other
(4) Complementary to the parental DNA
In some viruses, the flow of genetic information is from RNA to DNA. These viruses are:
(1) Reverse transcriptase
(2) Teminism
(3) Ribozymes
(4) Retroviruses
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
In Avery, Macleod and McCarty experiment, the transformation of bacteria was inhibited by:
(1) Proteases
(2) RNase
(3) DNAs
(4) None of these
Viruses grown on radioactive sulfur contain:
(1) Radioactive proteins but not DNA
(2) Radioactive DNA but not proteins
(3) Radioactive proteins and DNA
(4) Nonradioactive DNA and protein
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