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Introduction:
The RNA (ribonucleic acid) polymerase is a multi-subunit enzyme. It catalyzes the transcription of DNA (deoxyribonucleic acid) into different types of RNA.
Answer to Problem 1TYK
Correct answer:
The bacterial RNA polymerase produces mRNA (messenger RNA) when it transcribes a protein-coding gene.
Explanation of Solution
Explanation/Justification for the correct answer:
Option (c) is given that mRNA is produced by the bacterial RNA polymerase when it transcribes a protein-coding gene. The amino acids (building blocks of protein) are encoded by mRNA. Therefore, the mRNA is formed when the bacterial RNA polymerase transcribes the protein-coding genes. Hence, Option (c) is correct.
Explanation for incorrect answers:
Option (a) is given that rRNA (ribosomal RNA) is produced by the bacterial RNA polymerase when it transcribes a protein-coding gene. The rRNA is found in ribosomes. The rRNA plays a considerable role in the process of protein synthesis and not in the protein coding. So, it is an incorrect option.
Option (b) is given that tRNA (transfer RNA) is produced by the bacterial RNA polymerase when it transcribes a protein-coding gene. The tRNA helps to decode the mRNA sequence into a functional protein. So, it is an incorrect option.
Option (d) is given that snRNA (small nuclear RNA) is produced by the bacterial RNA polymerase when it transcribes a protein-coding gene. The snRNA helps in the splicing process to produce the mature mRNA. So, it is an incorrect option.
Hence, options (a), (b), and (d) are incorrect.
Thus, a bacterial RNA polymerase produces mRNA when it transcribes a protein-coding gene.
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Chapter 17 Solutions
Biological Science (7th Edition)
- Which of these features is found in eukaryotes but not bacteria?a. polygene mRNAs b. introns c. stop codon d. AUG codonarrow_forwardWhich type of RNA comprises over 80% of total cellular RNA? A. ribosomal RNA B. Messenger RNA C. Transfer RNAarrow_forwardWhich RNA types are involved in translation? A. mRNA, tRNA, siRNA B. siRNA, tRNA, rRNA C. tRNA, rRNA, mRNA D. rRNA, siRNA, tRNAarrow_forward
- Match each statement below with the correct RNA molecule. A. rRNA B. mRNA C. tRNA D. uRNA 1. Contains the codon 2. is read by the ribosome 3. contains the anticodon 4. Transport amino acids to the ribosomearrow_forwardWhat is the correct order of parts in a eukaryotic gene? A. promoter, intron, terminator, exon B. promoter, terminator, exon, intron C. promoter, intron, exon, terminator D. promoter, exon, intron, terminatorarrow_forwardWhat transcripts will be most affected by low levels of α- amanitin? a. 18S and 28S rRNAs b. pre-mRNAs c. 5S rRNAs and tRNAs d. other small nuclear RNAsarrow_forward
- What are the three phases of creating pre-mRNA? a. Initiation, Elongation and Termination b. Replication, Translation and Transliteration c. Initiation, Procession and Graduation d.arrow_forwardHow many initiation codons are there? a. 1 b. 3 c. 4 d. 20arrow_forwardIn RNA silencing, siRNAs and miRNAs usually bind to which part of the mRNA molecules that they control? a. 5′ UTR b. Coding region c. 3′ poly(A) tail d. 3′ UTRarrow_forward
- If you were to add all of the components necessary for transcription to a test tube, which nucleic acids would you find in the test tube after transcription termination? a. Double-stranded DNA b. Single-stranded DNA c. Double-stranded RNA d. Single-stranded RNA e. Double-stranded RNA/DNA hybrid f. A and Darrow_forwardWhich gene regulation event is ONLY present in prokaryotes? a. transcription level of regulation b. Capping of precursor mRNA c. Polyadenylation of the 3' end of the mRNAs d. mRNA splicingarrow_forwardWhich pre-mRNA processing step is important for initiating translation? a. poly-A tail b. RNA editing c. splicing d. 7-methylguanosine caparrow_forward
Concepts of BiologyBiologyISBN:9781938168116Author:Samantha Fowler, Rebecca Roush, James WisePublisher:OpenStax College