Regulation of Transcription in Prokaryotes MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Regulation of Transcription in Prokaryotes, a fundamental topic in the field of Molecular Biology. Whether you're preparing for competitive exams, honing your problem-solving skills, or simply looking to enhance your abilities in this field, our Regulation of Transcription in Prokaryotes MCQs are designed to help you grasp the core concepts and excel in solving problems.

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Regulation of Transcription in Prokaryotes MCQs | Page 3 of 11

Q21.
Glucose, as the carbon source, is the first choice by bacteria even if other sugars are available. The mechanism behind this selectivity is ___________
Discuss
Answer: (d).Catabolite repression
Discuss
Answer: (d).Binding to catabolite activator protein
Q23.
Tryptophan operon in E. coli is a repressible operon.
Discuss
Answer: (a).True
Discuss
Answer: (c).The Trp repressor binds to the tryptophan
Q25.
The expression of the tryptophan operon is independent of the availability of tryptophan in culture media.
Discuss
Answer: (b).False
Q26.
The functional unit in which genes are arranged consecutively is known as ___________
Discuss
Answer: (d).Operon
Q27.
The investigation of the lac operon for the metabolism of lactose was done by __________
Discuss
Answer: (c).Francois Jacob and Jacques Monod
Q28.
Presence of lactose itself induces the production of β-galactoside transferase.
Discuss
Answer: (a).True
Q29.
How many enzymes are produced in the lac operon under the same promoter?

a.

4

b.

3

c.

2

d.

1

Discuss
Answer: (b).3
Q30.
Defects in which regions can affect the activity of the lac operon?
Discuss
Answer: (d).i and o
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