DNA Structure and Packaging

Identify the scientists who proposed that DNA replication is semiconservative and the one who proved it experimentally:

Which of the following represents the complementary pairs?

Explain the heterochromatin part of the chromatin.

What is the difference between constitutive and facultative heterochromatin?

Heterochromatin exhibits active transcription.

_____ is also called the silent chromatin.

Nuclear proteins associated with DNA molecule in eukaryotes are _______ and _______.

NHP are associated with DNA replication.

Nucleoside is a nucleotide without _____.

A novel species with double-stranded genetic material consists of $5$ bases namely $\mathrm{P},\mathrm{Q},\mathrm{R},\mathrm{S},\mathrm{T},$ with percentage given below.

Among the four nitrogenous bases of DNA, which nitrogenous base is not found in RNA?

Which among the following scientists was first one to find out DNA?

Choose the correct combination

The correct answer is

Arrange the following aspect of a double stranded $\mathrm{DNA}$ molecule with the $3\text{'}\mathrm{AGT} \mathrm{CGT} \mathrm{CGAA}5\text{'}$ sequence in ascending order

A) Number of phosphodiester bond
B) Number of ${\mathrm{H}}_2$ bonds
C) Number of total pyramidines

A typical nucleosome "bead" is made up of

Match the following column I with column II

Choose the correct statement

(A) $\mathrm{DNA}$ is chemically more reactive and structurally stable compared to$\mathrm{RNA}$ 

(B) Catalytic $\mathrm{RNA}$ is known as Ribozymes

(C) DNA can directly code for the synthesis of protein, where as $\mathrm{RNA}$ dependent on DNA for protein synthesis

(D) Presence of $5$ -methyl uracil in the $\mathrm{DNA}$ also confers stability

The correct answer is

Phages infect the _____ (bacterial/virus) cells.

Nucleotides are made up of a hexose sugar, nitrogenous base and a phosphate group.