Protein and Nuclei Acids MCQs

Question 1

The enzyme which synthesize RNA primer for DNA synthesis is

Accepted Answer

DNA primase

Answer

Primase

Answer

Primer synthase

Answer

All of the above

Question 2

The role of guide RNA (gRNA) is recognized in

Accepted Answer

RNA editing

Answer

Antisense RNA

Answer

RNA splicing

Answer

All of the above

Question 3

The form or conformation of DNA double helix which is prevalent in vivo is

Accepted Answer

B-DNA

Answer

A-DNA

Answer

Z-DNA

Answer

All of the above

Question 4

The sugar residues are covalently joined by

Accepted Answer

5' → 3' phosphodiester bonds

Answer

H2 bonds

Answer

Phosphorylated ions

Answer

Covalent bonds

Question 5

The daughter cells receive duplex DNA as

Accepted Answer

One from parent and one is newly synthesized

Answer

Both strands from parents

Answer

Both strands are newly synthesized

Answer

Can not be predicted

Question 6

Molecular markers are useful in

Accepted Answer

All of the above

Answer

Gene or disease marker maps

Answer

Gene tracking

Answer

Marker-marker mapping

Question 7

In eukaryotes, which DNA polymerase is involved in extending the RNA primer and providing template for an accessory factor and replication factor, which control the processivity in lagging strand?

Accepted Answer

α

Answer

β

Answer

δ

Answer

γ

Question 8

Which one of the following base is present only in DNA?

Accepted Answer

Thymine

Answer

Uracil

Answer

5-methylcytosine

Answer

Inosine

Question 9

Kinase reactions

Accepted Answer

Involve the addition or removal of a phosphate group

Answer

Inhibit ATP breakdown

Answer

Involve the addition or removal of a ketone group

Answer

Involve the addition or removal of an amino acid to a polypeptide chain