Vector Systems MCQs

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

In this section, you'll find a wide range of Vector Systems mcq questions that explore various aspects of Vector Systems problems. Each MCQ is crafted to challenge your understanding of Vector Systems principles, enabling you to refine your problem-solving techniques. Whether you're a student aiming to ace Genetic Engineering tests, a job seeker preparing for interviews, or someone simply interested in sharpening their skills, our Vector Systems MCQs are your pathway to success in mastering this essential Genetic Engineering topic.

Note: Each of the following question comes with multiple answer choices. Select the most appropriate option and test your understanding of Vector Systems. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

So, are you ready to put your Vector Systems knowledge to the test? Let's get started with our carefully curated MCQs!

Vector Systems MCQs | Page 5 of 9

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Q41.
The immediate early transcripts direct synthesis of which genes?

a.

N genes

b.

cro genes

c.

Both N and cro genes

d.

PR and PL genes

Discuss
Answer: (c).Both N and cro genes
Q42.
What is the function of the N gene?

a.

It promotes the function of terminators

b.

It overrides the function of terminators

c.

It promotes the production of the cro gene

d.

It is responsible for making the infectious particle linear

Discuss
Answer: (b).It overrides the function of terminators
Q43.
Choose the correct statement for cII gene and its related function?

a.

The transcription is extended to the region of cII gene and it is termed as late transcription

b.

They are responsible for deactivating the promoter for repressor establishment

c.

This promoter is responsible to decide whether the life cycle would be lysogenic or lytic

d.

cII gene is responsible for other gene which is gene cIII

Discuss
Answer: (c).This promoter is responsible to decide whether the life cycle would be lysogenic or lytic
Q44.
Which gene is required for the lysogenic phage to be adopted?

a.

cI

b.

cII

c.

cIII

d.

All the three genes are interrelated

Discuss
Answer: (d).All the three genes are interrelated
Q45.
Choose the incorrect statement for lysogenic mode.

a.

PRE forms cI gene product which is responsible for activation of promoters

b.

The cII protein is responsible for interfering with cro and Q proteins and they are required for lytic life cycle

c.

The cII protein activates the promoter PINT

d.

The Int protein with host protein is responsible for site specific recombination

Discuss
Answer: (a).PRE forms cI gene product which is responsible for activation of promoters
Q46.
Choose the correct statement for the cI gene.

a.

It represses only cII gene

b.

It activates cII gene and represses cIII gene

c.

It represses both cII and cIII gene

d.

It activates both cII and cIII gene

Discuss
Answer: (c).It represses both cII and cIII gene
Q47.
Which of the promoter requires a low level of cI gene for its activation?

a.

PR

b.

PL

c.

PRE

d.

PRM

Discuss
Answer: (d).PRM
Q48.
Choose the correct statement with respect to lysogen and prophage.

a.

The integrated phage is called as lysogen

b.

The infected bacterial cell is called a prophage

c.

If there is only growth of few lysogens, the E. coli lawn would be turbid

d.

If lysogens won’t be formed, the plaques won’t be clear

Discuss
Answer: (c).If there is only growth of few lysogens, the E. coli lawn would be turbid
Q49.
Choose the incorrect statement for cro and Q proteins.

a.

They are required for the lytic life cycle to continue

b.

Cro protein inactivates the PRM promoter

c.

The Q protein is responsible for the expression of late genes

d.

cII protein is required for the lytic life cycle to continue

Discuss
Answer: (d).cII protein is required for the lytic life cycle to continue
Q50.
Induction of lysogen takes place because of __________

a.

Low levels of cII gene

b.

Low level of cI gene

c.

Low levels of both cI and cII gene

d.

High levels of both cI and cII gene

Discuss
Answer: (b).Low level of cI gene
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