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 5 of 21

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Q41.
Multiple copies of 5S genes, located at a chromosomal site distinct from the other rRNA genes

a.

are transcribed by rRNA polymerase III and the 5S rRNA

b.

are transcribed by rRNA polymerase II

c.

are transcribed by rRNA polymerase I and the 5S rRNA

d.

are transcribed by DNA polymerase I

Discuss
Answer: (a).are transcribed by rRNA polymerase III and the 5S rRNA
Q42.
Each tRNA molecule has a cloverleaf secondary structure consisting of

a.

three stem loops

b.

two stem loops

c.

four stem loops

d.

either (a) or (b)

Discuss
Answer: (a).three stem loops
Q43.
What is a promoter?

a.

A specific sequence of DNA to which a catabolic repressor binds

b.

A specific sequence of DNA to which RNA polymerase binds

c.

A specific DNA sequence to which a restriction endonuclease binds

d.

None of the above

Discuss
Answer: (b).A specific sequence of DNA to which RNA polymerase binds
Q44.
The function of the sigma factor of RNA polymerase is to

a.

assure that transcription begins at the proper point

b.

assure that transcription ends at the proper point

c.

assure that translation begins at the proper point

d.

assure that translation ends at the proper point

Discuss
Answer: (a).assure that transcription begins at the proper point
Q45.
In both eukaryotes and prokaryotes, a promoter region that is rich in AT bases is called as

a.

CATT

b.

Shine Dalgarno region

c.

TATA box

d.

SV40 region

Discuss
Answer: (c).TATA box
Q46.
The RNA polymerases that transcribe bacterial DNA are

a.

multisubunit enzymes

b.

only active inside the cell

c.

interchangable with DNA polymerases

d.

highly glycosylated in their active forms

Discuss
Answer: (a).multisubunit enzymes
Q47.
Immediately after transcription

a.

a methylated guanine cap is added to the 51 end of the transcript

b.

a methylated guanine cap is added to the 31 end of the transcript

c.

both (a) and (b)

d.

a poly adenylation signal is added

Discuss
Answer: (a).a methylated guanine cap is added to the 51 end of the transcript
Q48.
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
Q49.
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
Q50.
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
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