NEET : Multiple Choice questions: Transcription in Prokaryotes and Eukaryotes
1.In Prokaryotes, Transcription occur in
A. Nucleus B. Cytoplasm
C. Nucleoid D. Mesosome
Answer: B Explanation
2.In Prokaryotes and Eukaryotes both, correct sequence of steps involved in transcription.
A. Initiation : Elongation : Termination
B. Elongation : Initiation : Termination
C. Initiation : Termination : Elongation
D. Elongation : Termination and Initiation
Answer: B Explanation
3.Which of the following enzyme enters into in to template to bind promoter during the transcription.
A. DNA Polymerase
B. Ribonuclease
C. RNA polymerase
D. DNA ligase
Answer: C Explanation
4.Which of the following statement is not correct about RNA Polymerase.
A. It uses nucleoside triphosphate as substrate and synthesis new molecule of RNA by polymerising the nucleotide.
B. The RNA polymerase starts to open the DNA helix and catalyse the process of elongation.
C. As RNA polymerase binds to the promoter the transcription process starts.
D. RNA polymerase recognise promoter on template strand and bind to promoter to start Elongation.
Answer: D Explanation
5.Which of the following pair is not correctly matched.
A. Binding of : Initiation
RNA Polymerase
with promoter.
B.Open of DNA : Elongation
helix by RNA polym-
erase to increase
length of RNA.
C.Falling of RNA : Initiation
Polymerase to
Release RNA
D. Synthesising : Elongation
new molecule of
RNA by polymerising
the nucleotide
Answer: C Explanation
6.Which of the following takes place in termination of transcription.
A. RNA polymerase used nucleoside triphosphate as substrate for polymerising the nucleotide of RNA.
B. The RNA polymerase starts to open the DNA helix and catalyse the formation of new RNA.
C.The RNA polymerase falls off and newly synthesised RNA or nascent RNA is released.
D. RNA polymerase recognise promoter on template strand and bind to promoter.
Answer: C Explanation
7. Match the list
( Process) ( Factor)
A. Initiation 1. Sigma(σ)
B. Elongation 2. Rho (ρ)
C.Termination 3. Omega(ω)
A B C
A. 1 2 3
B. 1 3 2
C. 2 1 3
D. 2 3 1
Answer: B Explanation
8.Consider the difference between transcription in Prokaryotes and Eukaryotes and select the correct code.
1. Single RNA polymerase is required to catalyze the transcription in both Prokaryotes and Eukaryotes.
2. Transcription takes place in Nucleus and cytoplasm in Eukaryotes and prokaryotes respectively.
3. Structural genetic is polycistronic in Prokaryotes and monocistronic in Eukaryotes.
4. Splicing is present in transcription of Prokaryotes and Eukaryotes.
A. 1 and 2 B. 2 and 3
C. 3 and 4 D.1 and 4
Answer: B Explanation
9. In Prokaryotes, which of the following RNA is present to catalyze the transcription.
A. RNA Polymerase I
B. RNA Polymerase II
C. RNA Polymerase III
D. All of the above
Answer: A Explanation
10. Match the list
( RNa polymerase) ( RNA)
A. First 1. rRNA
B. Second 2. mRNA
C.Third 3. tRNA
A B C
A. 1 2 3
B. 1 3 2
C. 2 1 3
D. 2 3 1
Answer: A Explanation
11. In Eukaryotes, which of the following RNA is not transcribed by the RNA Polymerase IIII.
A. tRNA B.SrRNA
C.hnRNA D.SnRNA
Answer: C Explanation
12. Consider the following statement and select the correct code .
1. In Prokaryotes, mRNA is not processed from hnRNA.
2.In Eukaryotes, hnRNA undergoes processed level and form mRNA.
A. Only 1
B. Only 2
C. Both 1 and 2
D. Neither 1 nor 2
Answer: C Explanation
13. During the transcription, which one the following does not occur in Prokaryotes.
A. Elongation B.Initiation
C. Termination D.splicing
Answer: C Explanation
14. In Eukaryotes, Splicing transform which of the following RNA into mRNA.
A. SnRNA B.hnRNA
C. SrRNA D. tRNA
Answer: B Explanation
15. During Splicing, Which one of the following occur in Eukaryotes.
A. Removal of exon and intron
B. Adding of exon and intron
C.Removal of exon and adding of intron
D.Removal of intron and adding of Exon
Answer: D Explanation
16. Introns are
A. Coding sequences
B. Non Coding sequences
C. Repetitive sequence
D. Complementary sequence
Answer: B Explanation
17. Which one of the following pair is not correctly matched.
A. Heterogeneous nuclear RNA ( hnRNA) : mRNA
B. Intron : Non coding sequence
C. Exon : coding sequence
D. Small nuclear RNA (SnRNA) : rRNA
Answer: D Explanation
18. Identify the letter X and Y in given Diagram.
X Y
A. Exon intron
B. mRNA hnRNA
C. hnRNA mRNA
D. Intron Exon
Answer: D Explanation
19. Which one of the following statement is not correct about the splicing.
A. It is necessary to make functional of Rho and sigma factor.
B. It is necessary for the formation of mRNA from hnRNA
C. It involved removal of non Coding sequences and adding of coding sequences.
D. It also involved two additional process capping and tailing.
Answer: A Explanation
20. Which one of the following statement is not correct about capping.
A. Capping takes place at 3 ' ends of hnRNA.
B. Capping takes place at 5'
ends of hnRNA.
C. An unusual nucleotide is added in capping.
D. Methyl guanosine is added at 5' end of hnRNA.
Answer: A Explanation
21. Tailing takes place at 5' ends of hnRNA in which what number of adenylate residue are added.
A.100 to 200 B. 50 to 100
C. 200 to 300 D.10 to 200
Answer: C Explanation
22. Consider the following sentences and select the number of incorrect statements.
1. In Eukaryotes, nascent mRNA is released from nucleus to cytoplasm for protein synthesis.
2. Intron are present on newly formed mRNA after splicing.
3.Capping occurs at 5' end and tailing occurs at 3' end of mRNA.
4. In Prokaryotes, newly formed mRNA is present in cytoplasm.
A. One B. Two
C. Three D. Four
Answer: B Explanation
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