Explore topic-wise MCQs in Molecular Biology.

This section includes 7 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.

After the binding of polymerase to the DNA template the factor is ejected.

A. True
B. False
Answer» C.
Discussion
2.

The ternary complex is formed by the polymerase, DNA duplex and the nascent RNA.

A. True
B. False
Answer» C.
Discussion
3.

RNA polymerase adds the nucleotides de novo. The first nucleotide added by the polymerase is ____________

A. ATP
B. TTP
C. GTP
D. CTP
Answer» B. TTP
Discussion
4.

Region 1.1 of the factor mimics the DNA and is negatively charged.

A. True
B. False
Answer» B. False
Discussion
5.

With respect to the formation of a complex between polymerase and DNA template which of the following is correct?

A. Open: reversible; Closed: irreversible
B. Open: irreversible; Closed: reversible
C. Open and closed: reversible
D. Open and closed: irreversible
Answer» C. Open and closed: reversible
Discussion
6.

The isomerisation of 70 of bacterial polymerase is an energy dependent process.

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

To facilitate binding of 70 the melting of the template and non template strands occurs between the positions ____________

A. -11 to +3
B. -9 to +5
C. -10 to +1
D. -10 to +2
Answer» B. -9 to +5
Discussion