Microbiology Fundamentals: A Clinical Approach
3rd Edition
ISBN: 9781259709227
Author: Marjorie Kelly Cowan Professor, Heidi Smith
Publisher: McGraw-Hill Education
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Chapter 22, Problem 5Q
Why do you think microbes are so adept at breaking down sewage and wastewater?
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Which of the following is not true about biofilms
a) are caused by many Gram positive and Gram negative bacteria as well as algae and fungi
b) are highly contagious
c) are hard to treat due to impermeability to drugs
Which of the following methods of control kills the microbe?
a) incineration
Ob) desiccation
Oc) freezing
O d) refrigeration
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Which of the following regarding controlling microbial growth is true?
a) Microbial death rate increases with an increase in temperature
b) The more microbes present, the shorter amount of time it will take to kill the
population
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c) Gram-positive bacteria tend to be more resistant to chemicals than gram-
negative bacteria
d) Microbial death rate increases as pH approaches 7 (neutral)
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Chapter 22 Solutions
Microbiology Fundamentals: A Clinical Approach
Ch. 22.1 - Draw your own representation or logo depicting how...Ch. 22.2 - Provide a definition for zoonosis.Ch. 22.2 - Discuss the effects of deforestation and...Ch. 22.3 - Differentiate between coliforms and E. coli.Ch. 22.3 - Prob. 5AYPCh. 22.3 - Prob. 1MMCh. 22.3 - Q. What further precautions can vulnerable people...Ch. 22.4 - Define biological oxygen demand.Ch. 22.4 - Prob. 7AYPCh. 22.4 - Prob. 8AYP
Ch. 22 - Prob. 1QCh. 22 - In Malaysia, a form of malaria that was previously...Ch. 22 - Prob. 3QCh. 22 - Prob. 4QCh. 22 - Why do you think microbes are so adept at breaking...Ch. 22 - Prob. 6QCh. 22 - Contaminated water has a. lower biological oxygen...Ch. 22 - Why do microbes exist that are capable of cleaning...Ch. 22 - Prob. 9QCh. 22 - Prob. 10QCh. 22 - Prob. 11QCh. 22 - With what you have learned about increasingly...Ch. 22 - Prob. 13QCh. 22 - Explain how a warming climate is likely to impact...Ch. 22 - Conduct research to find out where the...Ch. 22 - Prob. 16QCh. 22 - Prob. 17QCh. 22 - Zika virus infection in adults may be asymptomatic...Ch. 22 - Prob. 19QCh. 22 - Prob. 20QCh. 22 - Prob. 21QCh. 22 - Prob. 1VC
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- What are all the descriptive terms used for microbes that live in different environments or the terms used for the environments that they live in? What does each term mean? In what types of environments are each microbial group found?arrow_forwardImagine yourself being assigned to a very poor, remote village to educate the people about sanitation and microbial control. What method of microbial destruction or microbe population control will you teach them in order to kill/destroy the microorganisms that may be found in: 1. the gallon of pond water collected for drinkingarrow_forwardWhy canal/pond water supports growth and development of microbes?arrow_forward
- can you Explain in 1000 words, the role of sewage treatment in hospitals?arrow_forwardWhich environment has many microorganisms and which has few?arrow_forwardFiltration to remove protozoa occurs in: Question 5 options: A) anaerobic sludge digestion. B) primary sewage treatment. C) secondary sewage treatment. D) water treatment.arrow_forward
- In order to assimilate nitrogen or sulfur, A microbe must first convert it into an oxidized form A microbe must first convert it into a reduced form A microbe must first fix it from a gaseous form A microbe must first neutralize itarrow_forwardBecause elemental poisons, such as heavy metals, cannot be furtherdegraded even by microbes, what is a possible fate of these metals?arrow_forwardAs a microbiology student, how can you prevent or control coliform contamination in drinking water of your respective communityarrow_forward
- Which of the following is correct about biofilms? O 1) They are comprised only of psychrophiles. O 2) They are more sensitive to changes in growth conditions than planktonic cells O 3) Quorum sensing allows the biofilm community to behave differently than planktonic organisms 4) Biofilms only form within the environment. 5) Pure cultures are necessary for biofilm formation.arrow_forwardWhy have scientists developed numerous methods to classify microorganisms?arrow_forwardThe use of culture-independent techniques has increased our understanding of microbial diversity without cultivation. Therefore, do microbiologists still need to attempt to grow new microbial species? Explain.arrow_forward
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