Prescott's Microbiology
10th Edition
ISBN: 9781259281594
Author: Joanne Willey, Linda Sherwood Adjunt Professor Lecturer, Christopher J. Woolverton Professor
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 41.2, Problem 2RIA
What types of chemicals can be used to preserve foods?
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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 41 Solutions
Prescott's Microbiology
Ch. 41.1 - What are some intrinsic factors that influence...Ch. 41.1 - How would the spoilage of bread differ from that...Ch. 41.1 - Why do sausage and other ground meat products...Ch. 41.1 - What extrinsic factors can determine whether food...Ch. 41.2 - MICRO INQUIRY Canned products such as vegetable...Ch. 41.2 - Describe the major approaches used in food...Ch. 41.2 - What types of chemicals can be used to preserve...Ch. 41.2 - What cellular component does HHP target? What is...Ch. 41.2 - How does nisin function? What bacterial genus...Ch. 41.2 - Prob. 5RIA
Ch. 41.2 - What are the major gases involved in MAP? How are...Ch. 41.3 - MICRO INQUIRY What foods are most prone to...Ch. 41.3 - What is the difference between a food-borne...Ch. 41.3 - What practical recommendations regarding food...Ch. 41.3 - Prob. 3RIACh. 41.3 - Members of what microbial genus produce fumonisins...Ch. 41.4 - MICRO INQUIRY Why is it important that PulseNet...Ch. 41.4 - How are most food-borne pathogens detected?Ch. 41.4 - Why is it advantageous to omit the pre-enrichment...Ch. 41.4 - How is PulseNet used in the surveillance of...Ch. 41.4 - How are most food-borne pathogens detected?Ch. 41.5 - Can you name at least two features that make these...Ch. 41.5 - What are the major types of milk fermentations?Ch. 41.5 - What are the major types of milk fermentations?Ch. 41.5 - What major steps are used to produce cheese? How...Ch. 41.5 - Prob. 1.4RIACh. 41.5 - Describe and contrast the processes of wine and...Ch. 41.5 - How do champagnes differ from wines?Ch. 41.5 - Describe how distilled spirits such as whiskey are...Ch. 41.5 - What microorganisms are most important in...Ch. 41.6 - What bacterial genera are often included in...Ch. 41.6 - How are probiotics used in agriculture?Ch. 41 - Compare the sell-by date of a package of hot dogs...Ch. 41 - You are going through a salad line in a cafeteria...Ch. 41 - Why were aflatoxins not discovered before the...Ch. 41 - What advantage might the Shiga-like toxin give E....Ch. 41 - Keep a record of what you eat for a day or two....Ch. 41 - During cheese production, LAB convert lactose to...Ch. 41 - Following recent outbreaks of E. coli O157:H7...
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