Recombinant DNA Technology MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Recombinant DNA Technology, a fundamental topic in the field of Biochemistry. Whether you're preparing for competitive exams, honing your problem-solving skills, or simply looking to enhance your abilities in this field, our Recombinant DNA Technology 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 Recombinant DNA Technology mcq questions that explore various aspects of Recombinant DNA Technology problems. Each MCQ is crafted to challenge your understanding of Recombinant DNA Technology principles, enabling you to refine your problem-solving techniques. Whether you're a student aiming to ace Biochemistry tests, a job seeker preparing for interviews, or someone simply interested in sharpening their skills, our Recombinant DNA Technology MCQs are your pathway to success in mastering this essential Biochemistry topic.

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Recombinant DNA Technology MCQs | Page 20 of 21

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Q191.
Which of the following statements regarding the regulation of trp operon expression by attenuation is correct?

a.

Rapid translation of the leader peptide prevents completion of mRNA transcript

b.

Rapid translation of the leader peptide allows completion of mRNA transcript

c.

The leader peptide sequence encodes enzymes required for tryptophan synthesis

d.

The leader peptide sequence contains no tryptophan residues

Discuss
Answer: (a).Rapid translation of the leader peptide prevents completion of mRNA transcript
Q192.
Which of the following increases gene expression as much as 200-fold?

a.

TATA box

b.

Insulator

c.

Enhancer

d.

CAAT box

Discuss
Answer: (c).Enhancer
Q193.
The mechanism by which CBP activates transcription is

a.

CBP has DNA methyl transferase activity

b.

CBP has histone acetyl transferase activity

c.

CBP interacts with the basal transcription complex

d.

CBP interacts with the basal transcription complex and has histone acetyl transferase activity

Discuss
Answer: (c).CBP interacts with the basal transcription complex
Q194.
RNAi stands for

a.

RNA inducer

b.

RNA interference

c.

RNA intron

d.

RNA insertion

Discuss
Answer: (b).RNA interference
Q195.
Which of the following about mRNA stability is not correct?

a.

Regulation of mRNA stability is a way of regulating gene expression

b.

Prokaryotic mRNAs have a half-life of only a few minutes

c.

Histone mRNAs have especially long poly-A tails and are stable

d.

It is thought that poly-A tails stabilize eukaryotic mRNAs

Discuss
Answer: (c).Histone mRNAs have especially long poly-A tails and are stable
Q196.
CAP is

a.

Catabolite gene activator protein

b.

Catabolite gene repressor protein

c.

Anabolite gene activator protein

d.

Anabolite gene repressor protein

Discuss
Answer: (a).Catabolite gene activator protein
Q197.
Trp repressor is a

a.

Homodimer

b.

Homotrimer

c.

Heterodimer

d.

Heterotrimer

Discuss
Answer: (a).Homodimer
Q198.
Attenuator sequences base-pair to form a stem-and-loop structure rich in

a.

A = T

b.

G ≡ C

c.

A = C

d.

G = C

Discuss
Answer: (b).G ≡ C
Q199.
Which of the following regulatory sequence allows transcription to continue?

a.

Sequence 1

b.

Sequence 2

c.

Sequence 3

d.

Sequence 4

Discuss
Answer: (b).Sequence 2
Q200.
Formation of the attenuator stem-and-loop structure depends on the events that occur during translation of

a.

Regulatory sequence 1

b.

Regulatory sequence 2

c.

Regulatory sequence 3

d.

Regulatory sequence 4

Discuss
Answer: (a).Regulatory sequence 1
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