Multiple Choice
The transcription initiation site of a eukaryotic gene is found at which location?
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15. Gene Expression
Introduction to Transcription
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Why does rho-dependent transcriptional termination in bacteria require the rho protein?
A
The rho protein binds to the RNA and facilitates the release of the RNA polymerase from the DNA template.
B
The rho protein acts as a helicase to unwind the DNA double helix.
C
The rho protein modifies the RNA polymerase to increase its transcriptional speed.
D
The rho protein directly binds to the DNA promoter region to initiate transcription.
Verified step by step guidance1
Understand the role of rho-dependent transcriptional termination in bacteria. This process is a mechanism to stop transcription, which is the synthesis of RNA from a DNA template.
Recognize that the rho protein is essential for this termination process. It is a type of helicase, which means it can unwind nucleic acid structures.
Identify that the rho protein binds to the RNA, not the DNA. This binding is crucial for its function in terminating transcription.
Learn that the rho protein facilitates the release of RNA polymerase from the DNA template. RNA polymerase is the enzyme responsible for synthesizing RNA, and its release is necessary to stop transcription.
Clarify that the rho protein does not modify RNA polymerase to increase transcriptional speed, nor does it bind directly to the DNA promoter region to initiate transcription. Its primary function is to terminate transcription by interacting with the RNA.
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