Explore topic-wise MCQs in Molecular Biology.

This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Molecular Biology knowledge and support exam preparation. Choose a topic below to get started.

1.

DNA_POLYMERASE_III_HAS_____________SUBUNITS.?$

A. 4
B. 6
C. 8
D. 10
Answer» E.
Discussion
2.

Which_of_the_following_types_of_DNA_polymerase_does_not_take_part_in_DNA_repair_?$

A. DNA polymerase I
B. DNA polymerase II
C. DNA polymerase III
D. DNA polymerase IV
Answer» D. DNA polymerase IV
Discussion
3.

Which of the following is false about klenow fragment?

A. Polymerization activity
B. 3’→5’ exonuclease activity
C. 5’→3’ exonuclease activity
D. 324 – 928 residue of polymerase I
Answer» C. 5‚Äö√Ñ√∂‚àö√ë‚àö¬•‚Äö√Ñ√∂‚àö√∫‚àö‚â†3‚Äö√Ñ√∂‚àö√ë‚àö¬• exonuclease activity
Discussion
4.

Polymerase I has two fragments. The residue of larger fragment consists from ____________residues.

A. 1 – 234
B. 234 – 658
C. 324 – 928
D. 234 – 928
Answer» D. 234 ‚Äö√Ñ√∂‚àö√ë‚àö¬® 928
Discussion
5.

Polymerase I has the highest affinity for dNTPs.

A. True
B. False
Answer» C.
Discussion
6.

All mutation in polymerases is lethal except the mutation of polymerase III.

A. True
B. False
Answer» C.
Discussion
7.

DNA polymerase II can polymerase upto ______________ nucleotides per minute at 37ÀöC.$

A. 50
B. 500
C. 5000
D. 50000
Answer» B. 500
Discussion
8.

Which of the following is used in prokaryotic replication?

A. DNA polymerase I
B. DNA polymerase II
C. DNA polymerase III
D. DNA polymerase δ
Answer» D. DNA polymerase ‚âà√≠¬¨‚Ä¢
Discussion
9.

Choose the odd one out with respect to DNA polymerase III.

A. dna E
B. dna N
C. dna Q
D. dna B
Answer» E.
Discussion
10.

Which of the following types of DNA polymerase has 3’→5’ exonuclease activity?

A. DNA polymerase I
B. DNA polymerase II
C. DNA polymerase III
D. DNA polymerase IV
Answer» B. DNA polymerase II
Discussion