Brock Biology of Microorganisms (15th Edition)
15th Edition
ISBN: 9780134261928
Author: Michael T. Madigan, Kelly S. Bender, Daniel H. Buckley, W. Matthew Sattley, David A. Stahl
Publisher: PEARSON
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Textbook Question
Chapter 6.2, Problem 1CR
Induction is considered the opposite of enzyme repression. Why?
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Chapter 6 Solutions
Brock Biology of Microorganisms (15th Edition)
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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- Explain the single operator site that is most important for repression.arrow_forwardKnowing that DNA cloning means making multiple identical copies (clones) of a DNA sequence of interest using target DNA, describe the process of amplification.arrow_forwardWould the mutation in the blue protein be considered a enhancer or suppressor of the original mutation in the white protein? A A A x B Active Inactive Active B.arrow_forward
- What is the effect of operator mutants?arrow_forwardCTP synthetase is allosterically activated by GTP. What function might this play in the cell?arrow_forwardClary Fray used the pET vector system to express her prokaryotic amylase enzyme. She added peptone into her culture broth of BL21(DE3) Escherichia coli strain to induce protein expression. At the end of the experiment, she discovered that her protein was not expressed. She repeated three more times but her protein of interest was still not produced. (i) (ii) (iii) (iv) (v) Explain the reason why Clary failed to obtain her protein of interest and suggest a solution to troubleshoot this problem. Clary plans to express her protein along with a polyhistidine-tag. Explain the importance of His-tag in protein work. Is DH5a Escherichia coli suitable to propagate the plasmid before protein expression? Besides heat shock method, elaborate another procedure Clary could utilize to transform the recombinant pET vector into the host cell. If her supervisor instructs her to express a gene from gold fish (Carassius auratus), is the expression system she is using now suitable for this experiment?…arrow_forward
- The cyanobacterium Oscillatoria sancta appears reddish-brown when grown under green light but alters its gene expression patterns and becomes blue-green when grown under red light. Explain this observation.arrow_forwardGenes involved in DNA to protein route are highly conserved in comparison to genes of enzymes that catalyze steps in metabolic pathways individually. What could be the reason for this?arrow_forwardTranscriptionally active chromatin are generally found near the outer regions of the nucleus near the membrane. true or false?arrow_forward
- What advantages are there for synthesizing an inactive protein that must subsequently be activated by posttranslationalmodifications?arrow_forwardConsider a bacterial strain that has a mutant lac repressor that cannot bind the operator. A. What will happen in the presence and absence of lactose? B. Will there be any difference if glucose is present or not? Explain your answer.arrow_forwardWhy would the biosynthetic enzymes of a cell be repressible rather than constitutive or inducible?arrow_forward
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