BROCK BIOL. OF MICROORGAN.-W/ACCESS >I
15th Edition
ISBN: 9780134810058
Author: MADIGAN
Publisher: PEARSON
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Chapter 6.8, Problem 1CR
How can quorum sensing be considered a regulatory mechanism for conserving cell
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Chapter 6 Solutions
BROCK BIOL. OF MICROORGAN.-W/ACCESS >I
Ch. 6.1 - What is protein domain?Ch. 6.1 - Why are most DMA-binding proteins specific to...Ch. 6.1 - Describe why a protein that binds to a specific...Ch. 6.2 - Why is negative control so named?Ch. 6.2 - How does a repressor inhibit the synthesis of a...Ch. 6.2 - Induction is considered the opposite of enzyme...Ch. 6.3 - Prob. 1MQCh. 6.3 - Prob. 2MQCh. 6.3 - What is the difference between an operon and a...Ch. 6.4 - Prob. 1MQ
Ch. 6.4 - Prob. 2MQCh. 6.4 - Explain how the lac operon is both positively and...Ch. 6.4 - Prob. 1CRCh. 6.5 - What is the major difference between...Ch. 6.5 - How do transcriptional activators in Archaea often...Ch. 6.5 - Explain how the Pyrococcus furiosus TrmBL1...Ch. 6.5 - Prob. 1CRCh. 6.6 - What are kinases and what is their role in...Ch. 6.6 - Prob. 2MQCh. 6.6 - Prob. 1CRCh. 6.7 - What are the primary response regulator and the...Ch. 6.7 - Why is adaptation during chemotaxis important?Ch. 6.7 - How does the response of the chemortaxis system to...Ch. 6.7 - Adaptation allows the mechanism controlling...Ch. 6.8 - What advantage do quorum-sensing systems confer on...Ch. 6.8 - Prob. 2MQCh. 6.8 - Prob. 3MQCh. 6.8 - How can quorum sensing be considered a regulatory...Ch. 6.9 - Which Escherichia coli genes are activated and...Ch. 6.9 - Prob. 2MQCh. 6.9 - What are some other conditions that trigger the...Ch. 6.9 - Explain the sequence of molecular events that...Ch. 6.10 - Prob. 1MQCh. 6.10 - Prob. 2MQCh. 6.10 - Prob. 3MQCh. 6.10 - Prob. 1CRCh. 6.11 - Prob. 1MQCh. 6.11 - Prob. 2MQCh. 6.11 - Prob. 3MQCh. 6.11 - What are the mechanisms by which regulation by...Ch. 6.12 - What happens when a riboswitch binds the small...Ch. 6.12 - What are the major differences between a repressor...Ch. 6.12 - What is the mechanism by which a riboswitch...Ch. 6.13 - Why does attenuation control not occur in...Ch. 6.13 - Prob. 2MQCh. 6.13 - Prob. 1CRCh. 6.14 - What is feedback inhibition?Ch. 6.14 - Prob. 2MQCh. 6.14 - Prob. 3MQCh. 6.14 - Describe how feedback inhibition is reversible.Ch. 6.15 - What types of covalent modifications commonly...Ch. 6.15 - Prob. 2MQCh. 6.15 - Explain the role of an anti-sigma factor.Ch. 6.15 - Which nucleotides are commonly used to covalently...Ch. 6 - What would happen to regulation from a promoter...Ch. 6 - Most of the regulatory systems described in this...Ch. 6 - Many amino acid biosynthetic operons under...Ch. 6 - How would you design a regulatory system to make...
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- What is the relationship between signal transduction and cellularproliferation?arrow_forwardBriefly describe and explain the benefits of quorum sensing.arrow_forwardWhat is the main benefit of cell signaling via direct physical contact and cell signaling over short distances (ex: nerve cell signaling)?arrow_forward
- What is UPR? What is the downstream impact of UPR activation in an eucaryotic cell?arrow_forwardDescribe and connect five different outcomes that could occur due to the loss of FMRP function in the cell in the figure provided.arrow_forwardWhat types of molecules can carry signals into the cell to a receport inside? what types of molecules cannont enter through the membrane and would be signal molecules that bind to receptors on the cell surface?arrow_forward
- Quorum sensing is triggered to begin when ___________. a. treatment with antibiotics occurs b. bacteria release growth hormones c. bacterial protein expression is switched on d. a sufficient number of bacteria are presentarrow_forwardWhat is the benefit of using second messangers and phosphorylation cascades during the transduction step of cell signaling?arrow_forwardHow is the purpose of cell signaling different in unicellular organisms vs. multicellular organisms? Provide an example of each.arrow_forward
- There is a group of six or so genes, called luxlux genes, whose gene products are necessary for light formation. Given that these bacterial genes are regulated together, propose a hypothesis for how the genes are organized and regulated. Match the terms in the left column to the appropriate blanks in the sentences on the right. Terms can be used once, more than once, or not at all. Terms: metaboliozed, density, quorum sensing, state, signal amplification, inhibit, activate, detected, secrete, transcrption initiation complex, consume, operon Bacterial cells blank molecules that can be blank by other bacterial cells. Sensing the concentration of such signalling molecules allows bacteria to monitor the local blank of cells, a phenomenon called blank. There is a group of genes in the genome of the described bacterium, called luxgenes, which are organized in an blank. Reaching a certain concentration, molecules involved in this process blank the luxgenes. As a result, the…arrow_forwardFigure 9.17 Which of the following statements about quorum sensing is false? Autoinducer must bind to receptor to turn on transcription of genes responsible for the production of more autoinducer. The receptor stays in the bacterial cell but the autoinducer diffuses out. Autoinducer can only act on a different cell: it cannot act on the cell in which it is made. Autoinducer turns on genes that enable the bacteria to form a biofilm.arrow_forwardFor cellular transduction, why is it useful that phosphorylation cascades have a series of protein kinases? a. they amplify the original signal b. they always lead to the same cellular response c. the number of molecules used is small and fixed d. they are cell specificarrow_forward
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