MICROBIOLOGY-ACCESS >CUSTOM<
13th Edition
ISBN: 9780135668825
Author: Tortora
Publisher: PEARSON
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Chapter 25, Problem 3MCQ
Summary Introduction
Introduction:
Escherichia coli is gram negative coliform bacteria known to reside in the human gut. Approximately 1014 microbes are known to inhabit in the gut of a healthy human being. These normal gut microflora play an essential role in the
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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 25 Solutions
MICROBIOLOGY-ACCESS >CUSTOM<
Ch. 25 - Complete the following table:Ch. 25 - Complete the following table:Ch. 25 - DRAW IT Identify the site colonized by the...Ch. 25 - Prob. 4RCh. 25 - Prob. 5RCh. 25 - Explain how the following diseases differ and how...Ch. 25 - Prob. 7RCh. 25 - Complete the following table:Ch. 25 - Look at life cycle diagrams for human tapeworm and...Ch. 25 - Prob. 10R
Ch. 25 - Prob. 1MCQCh. 25 - Prob. 2MCQCh. 25 - Prob. 3MCQCh. 25 - Gastric ulcers are caused by a. stomach acid. b....Ch. 25 - Microscopic examination of a patients fecal...Ch. 25 - Prob. 6MCQCh. 25 - Identification is based on the observation of...Ch. 25 - Prob. 8MCQCh. 25 - Prob. 9MCQCh. 25 - This microbe is frequently transmitted to humans...Ch. 25 - Why is a human infection of trichinella considered...Ch. 25 - Complete the following table:Ch. 25 - Match the foods in column A with the microorganism...Ch. 25 - Which diseases of the gastrointestinal tract can...Ch. 25 - Prob. 1CAECh. 25 - Prob. 2CAECh. 25 - Prob. 3CAECh. 25 - Three to 5 days after eating Thanksgiving dinner...
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