Prescott's Microbiology
11th Edition
ISBN: 9781260211887
Author: WILLEY, Sandman, Wood
Publisher: McGraw Hill
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Chapter 15, Problem 2AL
All of the subunits in bacterial RNA polymerases have homologues in both archaeal and eukaryotic RNA polymerases. What does this suggest about the evolution of these enzymes?
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List the functions of the three types of RNA polymerases in eukaryotes.
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Chapter 15 Solutions
Prescott's Microbiology
Ch. 15.2 - Prob. 1CCCh. 15.2 - Prob. 2CCCh. 15.2 - Prob. 3CCCh. 15.2 - Prob. 4CCCh. 15.2 - Prob. 5CCCh. 15.3 - What functions are served by the 5 cap and the 3...Ch. 15.3 - Retrieve, Infer, Apply What elements in archaeal...Ch. 15.3 - Prob. 2CCCh. 15.3 - Prob. 3CCCh. 15.4 - Prob. 1CC
Ch. 15.4 - Prob. 2CCCh. 15.4 - Prob. 3CCCh. 15.5 - Retrieve, Infer, Apply List two similarities and...Ch. 15.5 - Prob. 2CCCh. 15.5 - Retrieve, Infer, Apply How are cis-encoded RNAs,...Ch. 15 - Prob. 1RCCh. 15 - Prob. 2RCCh. 15 - Prob. 3RCCh. 15 - Prob. 4RCCh. 15 - Prob. 5RCCh. 15 - Prob. 6RCCh. 15 - Prob. 7RCCh. 15 - Prob. 8RCCh. 15 - Prob. 9RCCh. 15 - Prob. 1ALCh. 15 - All of the subunits in bacterial RNA polymerases...Ch. 15 - Would you expect that one day microbiologists...Ch. 15 - In the chapter opening story, it was stated that...Ch. 15 - Prob. 5AL
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- Many virologists note that viruses which have a genome made up of RNA will tend to evolve faster than those viruses whose genome is made up of double-stranded DNA. Most evolutionary biologists now accept that RNA was the first nucleic acid molecule to evolve to store information. Why is this early “RNA world” more likely when you consider how RNA polymerases (such as primase) and DNA polymerases start replicating nucleotide chains?arrow_forwardWhat is so special about RNA that it is hypothe-sized to be an evolutionary precursor to DNA and protein?What is it about DNA that makes it a better material thanRNA for storage of genetic information?arrow_forwardHow does the archaeal RNA polymerase differ from that in Bacteria? How does the initiation of transcription in the two domains differ? Why do eukaryotic mRNAs have to be “processed” whereas most prokaryotic RNAs do not?arrow_forward
- . How many components are there in RNA polymerase of prokaryotes? List down the functions of each component.arrow_forwardThe overall structures of RNA polymerase and DNA polymerase are very different, yet their active sites show considerable similarities. What do the similarities suggest about the evolutionary relationship between these two important enzymes?arrow_forwardWhat are the products of the reactions of the three eukaryotic RNA polymerases?arrow_forward
- If the 16s RNA gene is present in all bacteria (it is!), why can it be used to distinguish different bacterial species?arrow_forwardWhich RNA polymerase in eukaryotes is responsible for the transcription of genes that encode proteins? a. RNA polymerase I b. RNA polymerase II c. RNA polymerase III d. All of the abovearrow_forwardMessenger RNA in eukaryotic cells is synthesized by which of the following enzymes (stronglyinhibited by even very dilute concentrations of the fungal poison a-amanitin)?A. DNA polymerase IIIB. RNA polymerase IIIC. RNA polymerase IID. DNA polymerase IE. RNA polymerase Iarrow_forward
- Exon duplication of multiple alpha-helix coding domains is thought to be responsible for the origin of which vertebrate gene (coding for what is now the most abundant protein in human blood)? the plasminogen gene the albumin gene the urokinase gene the opsin gene the collagen genearrow_forwardWhy do scientists think that RNA silencing is an evolutionarily conserved process?arrow_forwardWhat is its functional difference with the RNA polymerases found in both eukaryotic and prokaryotic cells?arrow_forward
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