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Which one of the following is NOT TRUE of RNA polymerase II ?
- a)It requires a primer to initiate the transcription
- b)It makes an RNA copy of only one strand of a double- stranded DNA at any given time
- c)It does not synthesize rRNA and tRNA
- d)It catalyzes the polymerization of RNA only in the 5' → 3' direction
Correct answer is option 'A'. Can you explain this answer?
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Which one of the following is NOT TRUE of RNA polymerase II ?a)It requ...
RNA polymerase II is an enzyme responsible for the transcription of protein-coding genes in eukaryotes. It is a complex enzyme that catalyzes the synthesis of RNA from a DNA template. Here is a detailed explanation of the options given:
Option A: It requires a primer to initiate the transcription.
This statement is not true. Unlike DNA polymerase, RNA polymerase II does not require a primer to initiate transcription. It can directly bind to the promoter region of a gene and begin the transcription process.
Option B: It makes an RNA copy of only one strand of a double-stranded DNA at any given time.
This statement is true. RNA polymerase II can only transcribe one DNA strand at a time, which is known as the template strand. The other DNA strand, known as the non-template or coding strand, is not transcribed.
Option C: It does not synthesize rRNA and tRNA.
This statement is also true. RNA polymerase II is responsible for transcribing protein-coding genes, which produce mRNA molecules that are then translated into proteins. Ribosomal RNA (rRNA) and transfer RNA (tRNA) are transcribed by other RNA polymerases.
Option D: It catalyzes the polymerization of RNA only in the 5' to 3' direction.
This statement is true. RNA polymerase II adds nucleotides to the growing RNA chain in the 5' to 3' direction, which means that the 5' end of the RNA molecule is synthesized first and the 3' end is synthesized last.
In conclusion, option A is the answer to this question since RNA polymerase II does not require a primer to initiate transcription.
Option A: It requires a primer to initiate the transcription.
This statement is not true. Unlike DNA polymerase, RNA polymerase II does not require a primer to initiate transcription. It can directly bind to the promoter region of a gene and begin the transcription process.
Option B: It makes an RNA copy of only one strand of a double-stranded DNA at any given time.
This statement is true. RNA polymerase II can only transcribe one DNA strand at a time, which is known as the template strand. The other DNA strand, known as the non-template or coding strand, is not transcribed.
Option C: It does not synthesize rRNA and tRNA.
This statement is also true. RNA polymerase II is responsible for transcribing protein-coding genes, which produce mRNA molecules that are then translated into proteins. Ribosomal RNA (rRNA) and transfer RNA (tRNA) are transcribed by other RNA polymerases.
Option D: It catalyzes the polymerization of RNA only in the 5' to 3' direction.
This statement is true. RNA polymerase II adds nucleotides to the growing RNA chain in the 5' to 3' direction, which means that the 5' end of the RNA molecule is synthesized first and the 3' end is synthesized last.
In conclusion, option A is the answer to this question since RNA polymerase II does not require a primer to initiate transcription.
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Which one of the following is NOT TRUE of RNA polymerase II ?a)It requires a primer to initiate the transcriptionb)It makes an RNA copy of only one strand of a double- stranded DNA at any given timec)It does not synthesize rRNA and tRNAd)It catalyzes the polymerization of RNA only in the 5' →3' directionCorrect answer is option 'A'. Can you explain this answer?
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Which one of the following is NOT TRUE of RNA polymerase II ?a)It requires a primer to initiate the transcriptionb)It makes an RNA copy of only one strand of a double- stranded DNA at any given timec)It does not synthesize rRNA and tRNAd)It catalyzes the polymerization of RNA only in the 5' →3' directionCorrect answer is option 'A'. Can you explain this answer? for IIT JAM 2024 is part of IIT JAM preparation. The Question and answers have been prepared according to the IIT JAM exam syllabus. Information about Which one of the following is NOT TRUE of RNA polymerase II ?a)It requires a primer to initiate the transcriptionb)It makes an RNA copy of only one strand of a double- stranded DNA at any given timec)It does not synthesize rRNA and tRNAd)It catalyzes the polymerization of RNA only in the 5' →3' directionCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for IIT JAM 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which one of the following is NOT TRUE of RNA polymerase II ?a)It requires a primer to initiate the transcriptionb)It makes an RNA copy of only one strand of a double- stranded DNA at any given timec)It does not synthesize rRNA and tRNAd)It catalyzes the polymerization of RNA only in the 5' →3' directionCorrect answer is option 'A'. Can you explain this answer?.
Which one of the following is NOT TRUE of RNA polymerase II ?a)It requires a primer to initiate the transcriptionb)It makes an RNA copy of only one strand of a double- stranded DNA at any given timec)It does not synthesize rRNA and tRNAd)It catalyzes the polymerization of RNA only in the 5' →3' directionCorrect answer is option 'A'. Can you explain this answer? for IIT JAM 2024 is part of IIT JAM preparation. The Question and answers have been prepared according to the IIT JAM exam syllabus. Information about Which one of the following is NOT TRUE of RNA polymerase II ?a)It requires a primer to initiate the transcriptionb)It makes an RNA copy of only one strand of a double- stranded DNA at any given timec)It does not synthesize rRNA and tRNAd)It catalyzes the polymerization of RNA only in the 5' →3' directionCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for IIT JAM 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which one of the following is NOT TRUE of RNA polymerase II ?a)It requires a primer to initiate the transcriptionb)It makes an RNA copy of only one strand of a double- stranded DNA at any given timec)It does not synthesize rRNA and tRNAd)It catalyzes the polymerization of RNA only in the 5' →3' directionCorrect answer is option 'A'. Can you explain this answer?.
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