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.

Which of the following steps for the production of RNA is not regulated by enhancers?

A. Initiation
B. Elongation
C. Termination
D. RNA processing
Answer» D. RNA processing
Discussion
2.

How many mechanisms are present to enhance transcription by the enhancer molecules?

A. 2
B. 4
C. 3
D. 5
Answer» B. 4
Discussion
3.

The activation domain of activators recruits transcriptional factors to proper sites on the DNA.

A. True
B. False
Answer» C.
Discussion
4.

Transcriptional activators consist of __________ domains.

A. 1
B. 2
C. 3
D. 4
Answer» C. 3
Discussion
5.

The enhancers are gene specific regardless of the presence of insulators.

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

Enhancers are a unit of multiple functional sequence elements that together regulates the expression of a gene.

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

Immunoglobulin enhancers are active in which of the following cell types?

A. B lymphocytes
B. T lymphocytes
C. Macrophages
D. Megakaryocytes
Answer» B. T lymphocytes
Discussion
8.

Enhancers in which of the following positions are unable to enhance the process of transcription?

A. Just upstream the promoter
B. Several kilobases downstream promoter
C. Several kilobases upstream promoter
D. Within the promoter site
Answer» E.
Discussion
9.

Enhancers were first identified in __________

A. Rous sarcoma virus
B. Drosophila
C. SV40 virus
D. E. coli
Answer» D. E. coli
Discussion
10.

Enhancers that can function over very long distances known as ________________

A. Cis-acting enhancers
B. Trans-acting enhancers
C. Transvection
D. Allosteric enhancers
Answer» C. Transvection
Discussion