Multiple Choice
Which of the following is the best definition of a gene?
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15. Central Dogma & Gene Regulation
Introduction to Transcription
Multiple Choice
Which of the following is NOT an element directly involved in bacterial transcription?
A
Sigma factor
B
RNA polymerase
C
Ribosome
D
Promoter region
Verified step by step guidance1
Step 1: Understand the process of bacterial transcription, which is the synthesis of RNA from a DNA template. Key elements involved include the RNA polymerase enzyme, which synthesizes the RNA strand, and the sigma factor, which helps RNA polymerase recognize the promoter region on the DNA.
Step 2: Identify the role of the promoter region, which is a specific DNA sequence where RNA polymerase binds to initiate transcription.
Step 3: Recognize that the ribosome is not involved in transcription. Instead, the ribosome functions in translation, where it synthesizes proteins using the mRNA transcript produced during transcription.
Step 4: Compare each option to the roles in transcription: Sigma factor (involved), RNA polymerase (involved), Promoter region (involved), Ribosome (not involved).
Step 5: Conclude that the ribosome is the element NOT directly involved in bacterial transcription.
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