Multiple Choice
PRACTICE: All the following are involved in prokaryotic transcription but:
15. Central Dogma & Gene Regulation
Review of Prokaryotic vs. Eukaryotic Gene Expression
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PRACTICE: Which of the following statements concerning transcription in bacteria is FALSE:
A
There are a variety of sigma factors that affect transcription.
B
Sigma factors are parts of RNA polymerase that recognize promoter regions.
C
It occurs in the nucleus.
D
Termination occurs when a stem-loop is formed or due to the presence of Rho protein.
E
The prokaryotic mRNA does not include introns & does not need to be processed.
Verified step by step guidance1
Understand that transcription in bacteria occurs in the cytoplasm, not the nucleus, because bacteria are prokaryotic organisms and do not have a nucleus.
Recognize the role of sigma factors in bacterial transcription. Sigma factors are proteins that associate with RNA polymerase to facilitate the recognition of promoter regions, initiating transcription.
Identify the mechanisms of termination in bacterial transcription. Termination can occur through the formation of a stem-loop structure in the RNA or with the help of the Rho protein.
Note that prokaryotic mRNA does not contain introns, which means it does not require splicing or processing after transcription, unlike eukaryotic mRNA.
Evaluate each statement given in the problem to determine which one is false based on the understanding of bacterial transcription processes.
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