Microbiology with Diseases by Taxonomy, Books a la Carte Edition (5th Edition)
5th Edition
ISBN: 9780134141176
Author: Robert W. Bauman Ph.D.
Publisher: PEARSON
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Chapter 9, Problem 1CT
Summary Introduction
To answer:
The ways to increase the longevity of the sandwich with the use of antimicrobial chemical and physical agents.
Introduction:
The longevity of the food products can be increased by the use of certain kind of “antimicrobial chemicals and physical agents”. They can kill the growing microorganisms in the food products.
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In which growth phase are microorganisms most sensitive to antimicrobial agents? Why?
Chapter 9 Solutions
Microbiology with Diseases by Taxonomy, Books a la Carte Edition (5th Edition)
Ch. 9 - In practical terms in everyday use, which of the...Ch. 9 - Prob. 2MCCh. 9 - Prob. 3MCCh. 9 - Prob. 4MCCh. 9 - Prob. 5MCCh. 9 - The endospores or which organism can be used as a...Ch. 9 - A company that manufactures an antimicrobial...Ch. 9 - Prob. 8MCCh. 9 - Prob. 9MCCh. 9 - Prob. 10MC
Ch. 9 - Prob. 11MCCh. 9 - Which of the following adjectives best describes a...Ch. 9 - Biosafety Level 3 includes ________. a. double...Ch. 9 - Prob. 14MCCh. 9 - Prob. 15MCCh. 9 - Prob. 16MCCh. 9 - Prob. 17MCCh. 9 - Prob. 18MCCh. 9 - Prob. 19MCCh. 9 - Prob. 20MCCh. 9 - Prob. 1SACh. 9 - Compare and contrast four tests that have been...Ch. 9 - Prob. 3SACh. 9 - Prob. 4SACh. 9 - Prob. 5SACh. 9 - Describe five physical methods of microbial...Ch. 9 - Prob. 7SACh. 9 - Prob. 8SACh. 9 - Prob. 9SACh. 9 - Compare and contrast the action of alcohols,...Ch. 9 - Prob. 11SACh. 9 - Why are alcohols more effective in a 70% solution...Ch. 9 - Contrast the structures and actions of soaps and...Ch. 9 - What are some advantages and disadvantages of...Ch. 9 - Prob. 15SACh. 9 - Calculate the decimal reduction time (D) for the...Ch. 9 - Prob. 2VICh. 9 - Prob. 1CTCh. 9 - Is desiccation the only antimicrobial effect...Ch. 9 - Prob. 3CTCh. 9 - Prob. 4CTCh. 9 - Over 1000 people developed severe diarrhea, and at...Ch. 9 - An over-the-counter medicated foot powder contains...Ch. 9 - Prob. 7CTCh. 9 - Prob. 8CTCh. 9 - Explain why quaternary ammonium compounds are not...Ch. 9 - Prob. 10CTCh. 9 - Would you expect Gram-negative bacteria or...Ch. 9 - Where should you place a sterilization indicator...Ch. 9 - Why is liquid water necessary for microbial...Ch. 9 - Prob. 14CTCh. 9 - During the fall 2001 bioterrorist attack in which...Ch. 9 - Prob. 16CTCh. 9 - Prob. 17CTCh. 9 - Prob. 1CMCh. 9 - Why does milk eventually go bad despite being...Ch. 9 - Why are BSL-4 suits pressurized? Why not just wear...Ch. 9 - Prob. 3TMWCh. 9 - Prob. 4TMWCh. 9 - Prob. 1EDCS
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- Scientists have cultured bacteria isolated from within frozen mammoths, which are thousands of years old. Why would it not be surprising if these microbes were to show some resistance to modern antimicrobials that didn’t exist when the mammoths died?arrow_forwardWhat is the most difficult type of microbial cell or structure to kill? What methods can be used to sterilize a sample contaminated with these?arrow_forwardJams, jellies, preserves, honey, and other foodstuffs with a high sugar content hardly ever become contaminated by bacteria, even when the food containers are left open at room temperature. Why is this?arrow_forward
- Agar is a complex polysaccharide obtained from seaweed and cannot be digested by most microorganisms. Why does this property make agar an excellent solidifying agent for microbiological media?arrow_forwardOf what practical importance are air borne microorganisms to the laboratory workers? What precautions should be taken to control laboratory contaminants? Of what advantage is the using a solid and a liquid medium?arrow_forwardDuring the fall 2001 bioterrorist attack in which anthrax endospores were sent through the mail, one news commentator suggested that people should iron all their incoming mail with a regular household iron as a means of destroying endospores. Would you agree that this is a good way to disinfect mail? Explain your answer. Which disinfectant methods would be both more effective and more practical?arrow_forward
- Why do most antibacterial drugs not destroy human cells?arrow_forwardWhich of the following is NOT a property of an antimicrobial agent? a. Must have a known concentration over a period of time required to eliminate a pathogen b. all choices are correct c. must be selectively toxic d. Must have a favorable chemotherapeutic indexarrow_forwardwhen heat treatment is used as to contril microbial growth, what is the immediate impact of this increased temperature?arrow_forward
- What are the characteristics of an ideal antimicrobial agent?arrow_forwardWhy is an organism such as Staphylococcus adapted to growth on the human skin whereas the streptococci are generally not?arrow_forwardname two antimicrobials and explain whether the organism was susceptible, intermediate, or resistant.arrow_forward
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