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.
Promoters for tRNAs are located

a.

upstream from the start codon

b.

downstream from the start codon

c.

both (a) and (b)

d.

none of these

Discuss
Answer: (b).downstream from the start codon
Q42.
The binding of lac repressor to DNA could be considered to be analogous to

a.

competitive inhibition of an enzyme

b.

mixed-type inhibition of an enzyme

c.

uncompetitive inhibition of an enzyme

d.

allosteric effects in enzyme regulation

Discuss
Answer: (a).competitive inhibition of an enzyme
Q43.
Rho-dependent termination of transcription in E. coli

a.

requires ATP

b.

requires about 50 nucleotides of uncomplexed mRNA

c.

both (a) and (b)

d.

removes mRNA and holoenzyme from the DNA

Discuss
Answer: (c).both (a) and (b)
Q44.
Enhancers are regions that

a.

bind RNA polymerase

b.

are adjacent to the TATA box

c.

are CAT box binding proteins

d.

modulate transcription

Discuss
Answer: (d).modulate transcription
Q45.
Transcription by E. coli polymerase occurs in

a.

four phases known as initiation, propagation, elongation and termination

b.

three phases known as initiation, elongation and termination

c.

two phases known as initiation and termination

d.

none of the above

Discuss
Answer: (b).three phases known as initiation, elongation and termination
Q46.
Which of the following is necessary for transcription to occur?

a.

DNA molecule

b.

RNA polymerase

c.

DNA polymerase

d.

Both DNA & RNA polymerase

Discuss
Answer: (d).Both DNA & RNA polymerase
Q47.
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
Q48.
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
Q49.
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
Q50.
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
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