Brock Biology of Microorganisms
15th Edition
ISBN: 9780134626352
Author: MADIGAN
Publisher: PEARSON
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Textbook Question
Chapter 6, Problem 4AQ
How would you design a regulatory system to make Escherichia coli use succinic acid in preference to glucose? How could you modify it so that E. coli prefers to use succinic acid in the light but glucose in the dark?
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Chapter 6 Solutions
Brock Biology of Microorganisms
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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- The highly pathogenic anaerobic bacterium Clostridium perfringens is responsible for gas gangrene, a condition in which animal tissue structure is destroyed. This bacterium secretes an enzyme that efficiently catalyzes the hydrolysis of the peptide bond indicated in red: where X and Y are any of the 20 common amino acids. How does the secretion of this enzyme contribute to the invasiveness of this bacterium in human tissues? Why does thisenzyme not affect the bacterium itself?arrow_forwardWhat are the reagents and materials used/needed in the extraction of invertase from yeast? for a lab experiment regarding enzymes.arrow_forwardHow would azithromycin influence quorum sensing in this bacterium?arrow_forward
- When resources are limited for a bacterium, why would the bacterium be willing to spend energy to group translocate glucose?arrow_forwardHow would someone design an experiment to test the role of azithromycin on quorum sensing in Pseudomonas aeruginosa?arrow_forwardIn clinical chemistry, are enzymatic methods for determining glucose, cholesterol, and uric acid more preferred than non-enzymatic methods? Why or why not? In microbiology, are there techniques that can help make Bacterial Culture and Sensitivity done faster? Provide evidence of use in the Philippines.arrow_forward
- If an antibiotic were found to bind to a site on an essential bacterial enzyme other than the active site, what would its most likely mode of action be? Is it competitive or non-competitive?arrow_forwardWhy are some bacterial transformations ofxenobiotics possible only through cometabolism?arrow_forwardA researcher is trying to develop a media to isolate a strain of E.coli from a patient’s stomach. The research gives you an intestinal sample from the patient and she assurers you this sample contains the bacterial strain. Previous research shows that this strain of E.coli requires calpain to survive, which is a common enzyme found in beef. Using this information about calpain, how would you develop media to isolate this bacterial strain of E.coli?arrow_forward
- In Clinical Chemistry, are enzymatic methods for determining glucose, cholesterol and uric acid more preferred than non-enzymatic methods? Why or why not? In Microbiology, are there technologies that can help make Bacterial Culture and Sensitivity done faster? Provide evidence of use in our country.arrow_forwardIf you wanted to genetically engineer higher metabolic production of a target end product 'X', how would you do this?how would your approach differ in prokaryotes versus eukaryotes ?arrow_forwardYou have isolated a strain of E.coli that is resistant to penicillin,streptomycin,chloramphenicol and tetracycline. You also observe that when you mix this strain with a strain that is sensitive to all four antibiotics, the new strain becomes resistant to streptomycin,penicillin and chloramphenicol but not tetracycline. Explain how this is so?arrow_forward
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