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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Chapter 18.7, Problem 3MQ
Summary Introduction
Dictyostelium discoideum is unicellular and a member of cellular slime molds. These cells are haploid in nature and can become diploid under certain specific conditions. The members of this group of slime molds consume decaying plant material like leaf litter, logs and also consume other microorganisms like bacteria.
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19. On the diagram below
a. Label the three pictures as: DNA; polypeptide; or RNA.
b. Label the arrows as: translation or transcription/RNA processing.
c. Add the following details to the diagram.
Promoter region
TATA box
Transcription start site
Transcription terminator
Intron (A,B,C,D)
Exons (1,2,3,4,5)
Splice sites
5' cap
5' UTR (untranslated region)
3' poly A tail
3' UTR (untranslated region)
Translational start (AUG)
Translational stop (UGA, UAG, or UAA)
N and C ends of polypeptide
0000
Match the letter labels in the figure below to the terms. Some letter
labels are not used.
MNNNNNNIN
M
C
B
A
M
D
F
E
H
K
G
8
The diagram below illustrates a quorum sensing pathway from Staphylococcus aureus. Please answer the following questions.
1. Autoinduction is part of the quorum sensing system. Which promoter (P2 or P3) is critical for autoinduction?
2)This staphylococcus aureus grows on human wounds, causing severe infections. You would like to start a clinical trial to treat these wound infections. Please describe:
a) What molecule do you recommend for the trial. Why?
b) Your trial requires that Staphylococcus aureus be isolated from the wound and submitted to genome sequencing before admittance. Why? What are you testing for?
3) If a mutation arises where the Promoter P3 is constitutively active, how would that influence sensitivity to AIP? Please explain your rationale.
4) This pathway is sensitive to bacterial cell density. Describe two separate mutation that would render the pathway active independent of cell density. Briefly explain your rationale.
Mutation 1
Mutation 2
Chapter 18 Solutions
Brock Biology of Microorganisms (15th Edition)
Ch. 18.1 - Prob. 1MQCh. 18.1 - Prob. 2MQCh. 18.1 - Prob. 3MQCh. 18.1 - Prob. 1CRCh. 18.2 - Prob. 1MQCh. 18.2 - Prob. 2MQCh. 18.2 - Prob. 3MQCh. 18.2 - Ribosomal RNA gene sequences do not yield as...Ch. 18.3 - Contrast the two nutritional options for Euglena.Ch. 18.3 - Prob. 2MQ
Ch. 18.3 - Prob. 3MQCh. 18.3 - Prob. 1CRCh. 18.4 - Prob. 1MQCh. 18.4 - Prob. 2MQCh. 18.4 - What are apicoplasts, which organisms have them,...Ch. 18.4 - Three groups make up the alveolates: ciliates,...Ch. 18.5 - Prob. 1MQCh. 18.5 - Prob. 2MQCh. 18.5 - Prob. 3MQCh. 18.5 - Prob. 1CRCh. 18.6 - Prob. 1MQCh. 18.6 - How are chlorarachniophytes thought to have...Ch. 18.6 - The Rhizaria include diverse protists such as the...Ch. 18.7 - Prob. 1MQCh. 18.7 - Compare and contrast the lifestyles of gymnamoebas...Ch. 18.7 - Prob. 3MQCh. 18.7 - Prob. 1CRCh. 18.8 - What are conidia? How does a conidium differ from...Ch. 18.8 - Prob. 2MQCh. 18.8 - Prob. 3MQCh. 18.8 - Prob. 1CRCh. 18.9 - Why is the mold Penicillium economically...Ch. 18.9 - Prob. 2MQCh. 18.9 - Prob. 3MQCh. 18.9 - Prob. 1CRCh. 18.10 - Prob. 1MQCh. 18.10 - Prob. 2MQCh. 18.10 - Prob. 1CRCh. 18.11 - Prob. 1MQCh. 18.11 - Prob. 2MQCh. 18.11 - Prob. 1CRCh. 18.12 - Prob. 1MQCh. 18.12 - Prob. 2MQCh. 18.12 - Prob. 1CRCh. 18.13 - Prob. 1MQCh. 18.13 - Prob. 2MQCh. 18.13 - Prob. 1CRCh. 18.14 - What traits link cyanobacteria and red algae?Ch. 18.14 - Prob. 2MQCh. 18.14 - Prob. 1CRCh. 18.15 - What phototrophic properties link green algae and...Ch. 18.15 - What is unusual about the green algae...Ch. 18.15 - Prob. 3MQCh. 18.15 - Green algae are common in aquatic environments and...Ch. 18 - Explain why the process of endosymbiosis can be...Ch. 18 - Summarize the evidence for endosymbiosis. How...Ch. 18 - Prob. 3AQ
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