Transcription MCQs with Answers

adminApril 6, 2024

0 18 1 minute read

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 Online Quiz

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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

Which of the following statements about RNA processing is true?

It occurs after translation

It involves the addition of a 3' cap to mRNA

It includes capping, splicing, and polyadenylation

2 / 40

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

mRNA

DNA

tRNA

3 / 40

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

Splicing

Polyadenylation

Capping

4 / 40

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

Enhancer binding

Polyadenylation

Promoter recognition

5 / 40

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

Capping enzyme

Splicing enzyme

Polyadenylation enzyme

6 / 40

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

Core enzyme

Sigma factor

Helicase

7 / 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

8 / 40

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

RNA polymerase III

RNA polymerase II

RNA polymerase I

9 / 40

Which of the following statements about transcriptional activators is true?

They bind to silencers to decrease transcription

They inhibit the function of RNA polymerase

They bind to enhancers to increase transcription

10 / 40

The enzyme responsible for transcription is called ____.

DNA polymerase

Helicase

RNA polymerase

11 / 40

Which DNA strand serves as the template for transcription?

Non-template strand

Sense strand

Antisense strand

12 / 40

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

5' to 3' direction

3' to 5' direction

Random direction

13 / 40

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

It involves the removal of introns from pre-mRNA

It requires a sigma factor to recognize the promoter sequence

It occurs in the cytoplasm

14 / 40

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

Capping

Splicing

Polyadenylation

15 / 40

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

It is recognized by the sigma factor

It is a DNA sequence found in eukaryotic promoters

It is located downstream of the transcription start site

16 / 40

Which of the following is a component of RNA polymerase?

Sigma factor

Core enzyme

Helicase

17 / 40

Which of the following is NOT involved in transcription elongation?

Ribonucleotides

Sigma factor

RNA polymerase

18 / 40

The process of transcription occurs in the _____.

Nucleus

Cytoplasm

Ribosome

19 / 40

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

RNA polymerase

DNA polymerase

Helicase

20 / 40

The process of transcription is initiated at the _____.

Promoter

Enhancer

Terminator

21 / 40

The process of transcription terminates when _____.

A stop codon is encountered

All nucleotides are transcribed

RNA polymerase reaches a terminator sequence

22 / 40

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

Splicing enzyme

Capping enzyme

Polyadenylation enzyme

23 / 40

The process of transcription occurs in the _____.

Nucleus

Mitochondria

Cytoplasm

24 / 40

The process of transcriptional regulation involves _____.

Removing introns from pre-mRNA

Controlling the rate of mRNA synthesis

Modifying the structure of mRNA

25 / 40

The process of transcription is regulated by _____.

Ribosomes

Transcription factors

DNA polymerase

26 / 40

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

Shine-Dalgarno sequence

TATA box

Polyadenylation signal

27 / 40

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

It is a sequence of DNA nucleotides

It is recognized by the sigma factor

It is located downstream of the transcription start site

28 / 40

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

TTGACA

TATAAT

ATGCTA

29 / 40

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

Ribonuclease

Helicase

Spliceosome

30 / 40

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

RNA polymerase III

RNA polymerase I

RNA polymerase IV

31 / 40

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

Enhancing mRNA stability

Termination of transcription

Initiating translation

32 / 40

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

Repressor protein

RNA polymerase

Promoter

33 / 40

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

Adding nucleotides to the growing RNA chain

Unwinding the DNA double helix

Recognizing the promoter sequence

34 / 40

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

Enhancer

Promoter

Silencer

35 / 40

Transcription is the process of synthesizing ____.

Proteins

RNA

DNA

36 / 40

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

Methylated guanosine cap

Ribosome-binding site

Poly(tail

37 / 40

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

Hairpin loop

Rho factor

Polyadenylation signal

38 / 40

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

Polyadenylation signal

Shine-Dalgarno sequence

Hairpin loop

39 / 40

The template for transcription is _____.

RNA

Protein

DNA

40 / 40

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

Enhancers increase transcription, while silencers decrease transcription

Enhancers and silencers are recognized by RNA polymerase

Enhancers and silencers are both found within the gene coding region

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adminApril 6, 2024

0 18 1 minute read