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 9 of 21

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Q81.
Sex lethal (sxl) in Drosophila is transcribed when

a.

the X autosome balance is less than 0.5

b.

the X autosome balance is 1 or greater

c.

the X autosome balance equals 0.5

d.

none of the above

Discuss
Answer: (b).the X autosome balance is 1 or greater
Q82.
A mutation in the tip binding site of the repressor would result in

a.

constitutive trp operon expression

b.

inducible trp operon expression

c.

no operon expression

d.

none of the above

Discuss
Answer: (a).constitutive trp operon expression
Q83.
The first protein complex to bind to the TATA box is

a.

transcription factor IIA

b.

transcription factor IIB

c.

transcription factor IID

d.

all of these

Discuss
Answer: (c).transcription factor IID
Q84.
Which of the following is not part of the lac operon?

a.

I

b.

O

c.

P

d.

none of these

Discuss
Answer: (a).I
Q85.
The lac operon is transcribed in which segments?

a.

1

b.

2

c.

3

d.

4

Discuss
Answer: (a).1
Q86.
Which of the following occur in the presence of glucose?

a.

lac Z gene expression is increased

b.

cAMP increases

c.

Binding of CAP-cAMP complex to the promoter area decreases

d.

none of the above

Discuss
Answer: (c).Binding of CAP-cAMP complex to the promoter area decreases
Q87.
Sex hormones activate transcription of specific genes by

a.

binding to a transcription factor

b.

binding to RNA polymerase

c.

binding to DNA enhancer region

d.

binding to DNA promoter region

Discuss
Answer: (a).binding to a transcription factor
Q88.
The lac operon is translated into __________ proteins.

a.

1

b.

2

c.

3

d.

4

Discuss
Answer: (c).3
Q89.
In the presence of tryptophan in the cell, the repressor is __________

a.

bound to tryptophan

b.

bound to DNA

c.

bound to both DNA and tryptophan

d.

bound to neither tryptophan nor DNA

Discuss
Answer: (c).bound to both DNA and tryptophan
Q90.
Catabolite activating protein exerts __________ control on transcription of the lac operon genes.

a.

positive

b.

negative

c.

may be positive or negative

d.

none of these

Discuss
Answer: (a).positive
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