Microbiology: A Systems Approach
5th Edition
ISBN: 9781259706615
Author: Marjorie Kelly Cowan Professor
Publisher: McGraw-Hill Education
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Chapter 11.2, Problem 5AYP
Summary Introduction
To determine:
The six methods of physical control of microorganisms.
Concept introduction
Methods of controlling microbial growth are divided into two categories: physical method and chemical control method. Microorganisms can adapt to severe physical conditions like light, temperature, pressure, and moisture. Physical control agents use these factors to control bacterial growth. Heat is the most prominent physical method of control.
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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 11 Solutions
Microbiology: A Systems Approach
Ch. 11.1 - Distinguish among the terms sterilization,...Ch. 11.1 - Prob. 2AYPCh. 11.1 - Prob. 3AYPCh. 11.1 - Name four categories of cellular targets for...Ch. 11.2 - Prob. 5AYPCh. 11.2 - Prob. 6AYPCh. 11.2 - Define thermal death time and thermal death point,...Ch. 11.2 - Prob. 8AYPCh. 11.2 - Prob. 9AYPCh. 11.2 - Identify advantages and disadvantages of cold...
Ch. 11.2 - Differentiate between the two types of radiation...Ch. 11.2 - Prob. 12AYPCh. 11.2 - Prob. 13AYPCh. 11.3 - Name the desirable characteristics of chemical...Ch. 11.3 - Discuss several different halogen agents and their...Ch. 11.3 - List advantages and disadvantages to the use of...Ch. 11.3 - Explain the mode of action of alcohols and their...Ch. 11.3 - Prob. 18AYPCh. 11.3 - Define the term surfactant, and explain this...Ch. 11.3 - Identify examples of some heavy metal control...Ch. 11.3 - Discuss the advantages and disadvantages of...Ch. 11.3 - Prob. 22AYPCh. 11 - Microbial control methods that kill/destroy...Ch. 11 - Sanitization is a process by which a. the...Ch. 11 - Prob. 3MCQCh. 11 - Prob. 4MCQCh. 11 - Prob. 5MCQCh. 11 - The primary mode of action of nonionizing...Ch. 11 - The most practical method of disinfecting...Ch. 11 - A chemical with sporicidal properties is a....Ch. 11 - Prob. 9MCQCh. 11 - Detergents are a. high-level germicides. b....Ch. 11 - Prob. 11TFCh. 11 - Prob. 12TFCh. 11 - Prob. 13TFCh. 11 - Prob. 14TFCh. 11 - Prob. 15TFCh. 11 - a.Precisely what is microbial death? b.Why does a...Ch. 11 - Prob. 2CTQCh. 11 - Prob. 3CTQCh. 11 - Tissue transplantation is a procedure that saves...Ch. 11 - Conduct additional research on the use of...Ch. 11 - From chapter 2, figure 2.20. Study this...Ch. 11 - Prob. 2VCCh. 11 - Using the words that follow, please create a...
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