Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Textbook Question
Chapter 15, Problem 23CTQ
In your own words, describe the difference between rho-dependent and rho-independent termination of transcription in prokaryotes.
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The RB (retinoblastoma) protein normally
[ Select]
["keep a transcription factor in an inactive state",
"keep a transcription factor in an active state",
"keep the CDK in a phosphorylated state",
"block the function of the APC"] ...But it can be deactivated by [ Select ]
["ubiquitination", "methylation", "phosphorylation", "the use of a GAP"] .Mutations in Rb can lead to cancer because these mutations [ Select ]
["result in constitutive transcription leading to promotion of the cell cycle", "keep CDKs off", "deactivate p53", "increase the production of growth hormones"]
PLEASE SELCET THE CORRECT ONE FOR SECTION ONE . EACH SENTECNE HAVE 4 SECTION TO PICK FROM.
Explain the fundamental differences between negative control and positive control of transcription in prokaryotes. Cite two examples of each control mechanism.
Which of the following is the correct order of Rho-independent
termination in prokaryotes?
O Transcription of six adenines and rapid folding of RNA into hairpin,
transcription of inverted sequences, release of transcript
O Transcription of inverted sequences, transcription of six adenines and
rapid folding of RNA into hairpin, release of transcript
O Transcription of inverted sequences, release of transcript, transcription of
six adenines and rapid folding of RNA into hairpin
O Transcription of six adenines and rapid folding of RNA into hairpin, release
of transcript, transcription of inverted sequences
Chapter 15 Solutions
Biology 2e
Ch. 15 - Figure 15.11 A scientist splices a eukaryotic...Ch. 15 - Figure 15.13 Errors in splicing are implicated in...Ch. 15 - Figure 15.16 Many antibiotics inhibit bacterial...Ch. 15 - The AUC and AUA codons in mRNA both specify...Ch. 15 - How many nucleotides are in 12 mRNA codons? 12 24...Ch. 15 - Which event contradicts the central dogma of...Ch. 15 - Which subunit of the E. coli polymerase confers...Ch. 15 - The -10 and -35 regions of prokaryotic promoters...Ch. 15 - Three different bacteria species have the...Ch. 15 - Which feature of promoters can be found in both...
Ch. 15 - What transcripts will be most affected by low...Ch. 15 - How do enhancers and promoters differ? Enhancers...Ch. 15 - Which pre-mRNA processing step is important for...Ch. 15 - What processing step enhances the stability of...Ch. 15 - A scientist identifies a pre-mRNA with the...Ch. 15 - The RNA components of ribosomes are synthesized in...Ch. 15 - In any given species, there are at least how many...Ch. 15 - A scientist introduces a mutation that makes the...Ch. 15 - Imagine if there were 200 commonly occurring amino...Ch. 15 - Discuss how degeneracy of the genetic code makes...Ch. 15 - A scientist sequencing itiRNA identifies the...Ch. 15 - If mRNA is complementary to the DNA template...Ch. 15 - In your own words, describe the difference between...Ch. 15 - A fragment of bacterial DNA reads: 3’...Ch. 15 - A scientist observes that a cell has an RNA...Ch. 15 - Chronic lymphocytic leukemia patients often harbor...Ch. 15 - Transcribe and translate the following DNA...Ch. 15 - Explain how single nucleotide changes can have...Ch. 15 - A normal mRNA that reads 5’ -...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Transcription factors function in the nucleus. However, like (almost) all eukaryotic proteins,they are translated in the cytosol. Can you draw a visual to explain how transcription factor proteinsenter the nucleus from the cytoplasm? Can you also include a representation of relevant proteins and proteindomains to explain how these proteins reach their destination. Thank youarrow_forward5 5 S 6 5 5 5 6 U 6 U 6 5:14 PM | 0.2KB/s HHHHH R R U RUUR ARU AP AP R U U R R AP R R R AP MOLECULAR...GENETICS. Describe gene regulation at transcription level. Explain the role of antsense RNA in control mechanism. Describe translational control mechanisms. Describe common DNA damages. Distinguish excision and mismatch repair. Describe the role of recA protein in recombination repair Elaborate on SOS repair mechanism. Define thymine dimer. How are they formed and repaired? Describe the molecular basis of mutation. 11 Leu+ Met+ Arg+ Write a detailed note on spontaneous mutation. Explain about mutant detection methods. Define reverse mutation. Describe the mechanism underlying Intragenic and intergenic suppressor mutations Describe the transposition mechanisms. 13 Vo LTE UNIT IV Time (Min) Describe the process of generalised transformation occurring in bacterial chromosome and plasmid. Elaborate on molecular mechanism and significance of transformation 22 Describe the process of…arrow_forwardMany transcription factors function as dimers. The binding sites of dimeric transcription factors have a common feature that allows the dimer to bind. Write out an imaginary sequence that shows this feature (make it double stranded)."arrow_forward
- Microbiologists describe the processes of transcription and translation as “coupled” in bacteria. This term indicates that bacterial mRNA can be undergoing transcription at the same moment it is also undergoing translation. How is coupling possible in bacteria? Is coupling of transcription and translation possible in single-celled eukaryotes, such as yeast? Why or why not?arrow_forwardHow would transcription be affected in eukaryotic cells if Mediator was deleted? Group of answer choices 1.Transcription would occur, but a basal level 2.Transcription would be unaffected with normal levels of transcript produced 3.Transcription would be accelerated 4.Transcription would be aborted and no transcription would take placearrow_forwardDescribe rho dependent termination in prokaryotesarrow_forward
- What would happen to the regulation of the tryptophan operon in bacterial cells that express a mutant form of the tryptophan repressor that (1) cannot bind to DNA, (2) cannot bind tryptophan, or (3) binds to DNA even in the absence of tryptophan?arrow_forwardWhat is the difference between a general transcription factor (like sigma 70) and a regulatory transcription factor (like lac repressor)? Compare and contrast their roles in regulating RNA polymerase and in regulating transcription.arrow_forwardATM is a kinase that phosphorylates histone H2AX in response to double-stranded DNA breaks. Which of the following scenarios would most quickly regulate ATM activity in the cell? a) Adding silencing methyl groups to cytosines in the Atm gene b) Modifying the histone code for the Atm gene c) Increasing expression of a miRNA specific for the Atm mRNA d) Activating an E3 ubiquitin ligase specific for the ATM proteinarrow_forward
- Describe rho independent termination in prokaryotesarrow_forwardIn 3-4 sentences eachExplain the difference between prokaryotic and eukaryotic transcription. Explain the difference between an activator and a repressor? Explain the difference between a promoter and an enhancer? Explain the difference between an intron and an exon? Explain what happens when eIF-2 is phosphorylated and when it is not phosphorylated?arrow_forwardIn a written paragraph, describe the difference between prokaryotic and eukaryotic TRANSCRIPTION. In your response, include the following: - differences in what structures (DNA, RNA, proteins etc...) are involved - differences in timing and location - DO NOT include any details on what happens after transcriptionarrow_forward
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