Brock Biology of Microorganisms (14th Edition)
14th Edition
ISBN: 9780321897398
Author: Michael T. Madigan, John M. Martinko, Kelly S. Bender, Daniel H. Buckley, David A. Stahl, Thomas Brock
Publisher: PEARSON
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Chapter 12, Problem 14RQ
What are some processes that influence the content of the pan genome?
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Molecular Biology
Please help with question. thank you
You are studying the expression of the lac operon. You have isolated mutants as described below. In the presence of glucose, explain/describe what would happen, for each mutant, to the expression of the lac operon when you add lactose AND what would happen when the bacteria has used up all of the lactose (if the mutant is able to use lactose).5. Mutations in the lac operator that strengthen the binding of the lac repressor 200 fold
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A bacteria has a gene whose protein/enzyme product is involved with the synthesis of a lipid necessary for the synthesis of the cell membrane. Expression of this gene requires the binding of a protein (called ACT) to a control sequence (called INC) next to the promoter.
A. Is the expression/regulation of this gene an example of induction or repression?Please explain:B. Is this expression/regulation an example of positive or negative control?C. When the lipid is supplied in the media, the expression of the enzyme is turned off.Describe one likely mechanism for how this “turn off” is accomplished.
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Discuss/define the following:(a) poly A polymerase (b) trans-splicing (c) operon
Chapter 12 Solutions
Brock Biology of Microorganisms (14th Edition)
Ch. 12.1 - What characteristics would have made the surface...Ch. 12.1 - How do we know when oceans were first present on...Ch. 12.1 - What lines of reasoning support the hypothesis...Ch. 12.2 - Why is the origin of cyanobacteria considered a...Ch. 12.2 - What caused the development of banded iron...Ch. 12.2 - What lines of evidence indicate that microbial...Ch. 12.3 - What evidence supports the idea that the...Ch. 12.3 - Prob. 2MQCh. 12.3 - In what ways are modern eukaryotes a combination...Ch. 12.4 - Prob. 1MQ
Ch. 12.4 - Prob. 2MQCh. 12.4 - Prob. 3MQCh. 12.5 - How are DNA sequences obtained for phylogenetic...Ch. 12.5 - What does a phylogenetic tree depict?Ch. 12.5 - Prob. 3MQCh. 12.6 - What are the different processes that give rise to...Ch. 12.6 - What is the difference between selection and...Ch. 12.6 - In the experiment of Figure 13.12, why did the...Ch. 12.7 - What is the difference between the core and pan...Ch. 12.7 - What kind of recombination might have the greatest...Ch. 12.7 - What effects do deletions have on the evolution of...Ch. 12.8 - What is the difference between taxonomy and...Ch. 12.8 - What are some key criteria from the phylogenetic...Ch. 12.8 - How many species of Bacteria and Archaea have been...Ch. 12.9 - What class of genes is used in MLST analyses?Ch. 12.9 - How is ribotyping different from rep-PCR?Ch. 12.9 - What is FAME analysis?Ch. 12.10 - What roles do culture collections play in...Ch. 12.10 - What is the IJSEM and what taxonomic function does...Ch. 12.10 - Why might viable cell cultures be of more use in...Ch. 12 - Prob. 1RQCh. 12 - Prob. 2RQCh. 12 - Prob. 3RQCh. 12 - What is the endosymbiotic hypothesis for the...Ch. 12 - Prob. 5RQCh. 12 - REVIEW QUESTIONS
6. What major physiological and...Ch. 12 - Prob. 7RQCh. 12 - Prob. 8RQCh. 12 - Prob. 9RQCh. 12 - What is the difference between a gene tree and an...Ch. 12 - Prob. 11RQCh. 12 - Prob. 12RQCh. 12 - What is fitness? To what degree does fitness...Ch. 12 - What are some processes that influence the content...Ch. 12 - Prob. 15RQCh. 12 - What is the "species problem" and why is the...Ch. 12 - Prob. 17RQCh. 12 - Prob. 18RQCh. 12 - Prob. 19RQCh. 12 - Prob. 20RQCh. 12 - Prob. 21RQCh. 12 - Compare and contrast the physical and chemical...Ch. 12 - For the following sequences, construct the...Ch. 12 - Imagine that you have been given several bacterial...Ch. 12 - Imagine that you have discovered a new form of...
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