Transcription MCQs with Answers

adminApril 6, 2024Last Updated: October 16, 2024

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Welcome to the Transcription MCQs with Answers. In this post, we have shared Transcription Online Test for different competitive exams. Find practice Transcription Practice Questions with answers in Biology Tests exams here. Each question offers a chance to enhance your knowledge regarding Transcription.

Transcription is the process in which genetic information encoded in DNA becomes copied into mRNA. This can be viewed as a prime step of gene expression, because cells can now synthesize all proteins that are involved in a wide range of functions.

It begins with the attachment of RNA polymerase to a specific region of DNA called the promoter. This unwinds and separates DNA. RNA polymerase travels down one of the DNA template strands. There it forms one of the strands of RNA by adding complementary RNA nucleotides to the chain. For example, wherever there is an adenine (A) in the DNA template, RNA polymerase adds uracil (U) to the mRNA.

When the RNA strand is synthesized, a few other things happen in the process: adding a 5′ cap, a poly-A tail, and splicing to remove the introns or non-coding regions. Mature mRNA leaves the nucleus and enters the cytoplasm where it will be translated into a protein. Transcription controls gene expression and what the cell does.

Transcription Online Quiz

By presenting 3 options to choose from, Transcription Quiz which cover a wide range of topics and levels of difficulty, making them adaptable to various learning objectives and preferences. You will have to read all the given answers of Transcription Questions and Answers and click over the correct answer.

Test Name: Transcription MCQ Quiz Practice
Type: Quiz Test
Total Questions: 40
Total Marks: 40
Time: 40 minutes

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Transcription

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1 / 40

The template for transcription is _____.

RNA

Protein

DNA

2 / 40

The process of transcription is initiated at the _____.

Terminator

Enhancer

Promoter

3 / 40

The process of transcription occurs in the _____.

Nucleus

Cytoplasm

Mitochondria

4 / 40

Which of the following is NOT involved in transcription elongation?

Sigma factor

RNA polymerase

Ribonucleotides

5 / 40

Which of the following is a post-transcriptional modification of mRNA in eukaryotes?

Polyadenylation

Enhancer binding

Promoter recognition

6 / 40

In eukaryotes, which enzyme adds a 5' cap to mRNA transcripts?

Capping enzyme

Polyadenylation enzyme

Splicing enzyme

7 / 40

Which of the following statements about the TATA box is true?

It is located downstream of the transcription start site

It is a DNA sequence found in eukaryotic promoters

It is recognized by the sigma factor

8 / 40

Which of the following is NOT a component of the transcription initiation complex?

Repressor protein

Promoter

RNA polymerase

9 / 40

In eukaryotes, the enzyme responsible for removing introns from pre-mRNA is called ____.

Helicase

Ribonuclease

Spliceosome

10 / 40

RNA polymerase adds nucleotides to the growing RNA chain in the _____.

3' to 5' direction

Random direction

5' to 3' direction

11 / 40

The process of transcription is regulated by _____.

DNA polymerase

Ribosomes

Transcription factors

12 / 40

The process of transcriptional regulation involves _____.

Controlling the rate of mRNA synthesis

Removing introns from pre-mRNA

Modifying the structure of mRNA

13 / 40

Which of the following is a function of the sigma factor in transcription?

Recognizing the promoter sequence

Unwinding the DNA double helix

Adding nucleotides to the growing RNA chain

14 / 40

In eukaryotes, which RNA polymerase is responsible for transcribing most protein-coding genes?

RNA polymerase I

RNA polymerase II

RNA polymerase III

15 / 40

Which of the following enzymes is NOT directly involved in transcription?

RNA polymerase

Helicase

DNA polymerase

16 / 40

The process of transcription occurs in the _____.

Cytoplasm

Ribosome

Nucleus

17 / 40

Which of the following statements about transcription initiation in prokaryotes is true?

It requires a sigma factor to recognize the promoter sequence

It involves the removal of introns from pre-mRNA

It occurs in the cytoplasm

18 / 40

Which of the following is a function of the poly(tail in eukaryotic mRNA?

Enhancing mRNA stability

Termination of transcription

Initiating translation

19 / 40

The consensus sequence recognized by the sigma factor in prokaryotic promoters is _____.

TATAAT

TTGACA

ATGCTA

20 / 40

The promoter region of a gene is located _____.

Upstream of the transcription start site

Downstream of the transcription start site

Within the gene coding region

21 / 40

Which of the following statements about transcriptional activators is true?

They inhibit the function of RNA polymerase

They bind to enhancers to increase transcription

They bind to silencers to decrease transcription

22 / 40

Which of the following is NOT involved in the termination of transcription in prokaryotes?

Hairpin loop

Polyadenylation signal

Rho factor

23 / 40

In eukaryotes, the process of mRNA capping involves adding a _____.

Methylated guanosine cap

Ribosome-binding site

Poly(tail

24 / 40

The enzyme responsible for transcription is called ____.

Helicase

RNA polymerase

DNA polymerase

25 / 40

The process of transcription is terminated by the formation of a ____.

Hairpin loop

Polyadenylation signal

Shine-Dalgarno sequence

26 / 40

Which of the following is a characteristic of the TATA box in eukaryotic promoters?

It is located downstream of the transcription start site

It is a sequence of DNA nucleotides

It is recognized by the sigma factor

27 / 40

Which of the following is NOT a type of RNA polymerase found in eukaryotes?

RNA polymerase I

RNA polymerase III

RNA polymerase IV

28 / 40

The process of removing introns and joining exons in eukaryotic mRNA is called ____.

Capping

Splicing

Polyadenylation

29 / 40

Which of the following statements about enhancers and silencers is true?

Enhancers and silencers are recognized by RNA polymerase

Enhancers increase transcription, while silencers decrease transcription

Enhancers and silencers are both found within the gene coding region

30 / 40

The process of transcription terminates when _____.

RNA polymerase reaches a terminator sequence

A stop codon is encountered

All nucleotides are transcribed

31 / 40

The polyadenylation signal sequence in eukaryotic mRNA is recognized by ____.

Polyadenylation enzyme

Capping enzyme

Splicing enzyme

32 / 40

Which of the following is a component of RNA polymerase?

Core enzyme

Helicase

Sigma factor

33 / 40

Which of the following is NOT a type of RNA molecule?

DNA

tRNA

mRNA

34 / 40

Which DNA strand serves as the template for transcription?

Sense strand

Non-template strand

Antisense strand

35 / 40

Which of the following is NOT a type of RNA processing in eukaryotes?

Capping

Polyadenylation

Splicing

36 / 40

The region of DNA where RNA polymerase binds to initiate transcription is called the ____.

Enhancer

Promoter

Silencer

37 / 40

Which of the following statements about RNA processing is true?

It involves the addition of a 3' cap to mRNA

It occurs after translation

It includes capping, splicing, and polyadenylation

38 / 40

Which of the following is NOT a component of the RNA polymerase holoenzyme in prokaryotes?

Core enzyme

Sigma factor

Helicase

39 / 40

Transcription is the process of synthesizing ____.

Proteins

DNA

RNA

40 / 40

In prokaryotes, which region of the mRNA transcript serves as a binding site for the ribosome?

Shine-Dalgarno sequence

Polyadenylation signal

TATA box

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adminApril 6, 2024Last Updated: October 16, 2024

0 24 2 minutes read