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Campbell Biology Chapter 16-17

Question:

Which of the following statements best describes the termination of transcription in prokaryotes?

A) RNA polymerase transcribes through the polyadenylation signal, causing proteins to associate with the transcript and cut it free from the polymerase.

B) RNA polymerase transcribes through the terminator sequence, causing the polymerase to fall off the DNA and release the transcript.

C) RNA polymerase transcribes through an intron, and the snRNPs cause the polymerase to let go of the transcript.

D) Once transcription has initiated, RNA polymerase transcribes until it reaches the end of the chromosome.

E) RNA polymerase transcribes through a stop codon, causing the polymerase to stop advancing through the gene and release the mRNA.

Answer:

B) RNA polymerase transcribes through the terminator sequence, causing the polymerase to fall off the DNA and release the transcript.

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Last update by mayur on 03/27/2014
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Campbell Biology Chapter 16 17
Campbell Biology Chapter 16-17
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Free Flashcard From Campbell Biology Chapter 16-17
Question: Which of the following statements best describes the termination of transcription in prokaryotes? A) RNA polymerase transcribes through the polyadenylation signal, causing proteins to associate with the transcript and cut it free from the polymerase. B) RNA polymerase transcribes through the terminator sequence, causing the polymerase to fall off the DNA and release the transcript. C) RNA polymerase transcribes through an intron, and the snRNPs cause the polymerase to let go of the transcript. D) Once transcription has initiated, RNA polymerase transcribes until it reaches the end of the chromosome. E) RNA polymerase transcribes through a stop codon, causing the polymerase to stop advancing through the gene and release the mRNA.
Answer: B) RNA polymerase transcribes through the terminator sequence, causing the polymerase to fall off the DNA and release the transcript.