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Multiple Choice
What does a bacterial RNA polymerase produce when it transcribes a protein-coding gene?
A
Ribosomal RNA (rRNA)
B
Messenger RNA (mRNA)
C
DNA
D
Transfer RNA (tRNA)
Verified step by step guidance
1
Understand the role of RNA polymerase: RNA polymerase is an enzyme that synthesizes RNA from a DNA template during the process of transcription.
Identify the type of gene being transcribed: The problem specifies a 'protein-coding gene', which is crucial for determining the type of RNA produced.
Recall the function of different types of RNA: Messenger RNA (mRNA) carries the genetic information from DNA to the ribosome, where proteins are synthesized. Ribosomal RNA (rRNA) and transfer RNA (tRNA) are involved in protein synthesis but are not directly transcribed from protein-coding genes.
Determine the product of transcription for protein-coding genes: When RNA polymerase transcribes a protein-coding gene, it produces mRNA, which will later be translated into a protein.
Conclude that the correct answer is mRNA: Based on the understanding that mRNA is the direct product of transcription of protein-coding genes, confirm that the correct answer is Messenger RNA (mRNA).