Microbiology With Diseases By Taxonomy (6th Edition)
6th Edition
ISBN: 9780134832302
Author: Robert W. Bauman Ph.D.
Publisher: PEARSON
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Textbook Question
Chapter 27, Problem 1MTF
__ Biofilms of microorganisms form in aquatic environments only.
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A microorganism found living under conditions of high ________ is a barophile.
carbon dioxide levels
hydrostatic pressure
salt concentrations
oxygen concentrations
pH values
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.
Describe how microbial populations interact within a living biofilm.
Describe the advantages to living in a biofilm and the genetic changes that occur in cells that adopt this lifestyle.
Chapter 27 Solutions
Microbiology With Diseases By Taxonomy (6th Edition)
Ch. 27 - A blogger stated that germs (microorganisms) are...Ch. 27 - Compare human, animal, and plant pathogens that...Ch. 27 - In the environment, nutrients are generally...Ch. 27 - Most chemical elements exist in the environment as...Ch. 27 - In the carbon cycle, microbes convert _______. a....Ch. 27 - In aquatic environments, most microbial life is...Ch. 27 - Of the following characteristics, which would...Ch. 27 - Anammox reactions are _______. a. anaerobic and...Ch. 27 - __ Biofilms of microorganisms form in aquatic...Ch. 27 - __ Cooperation is common among microorganisms...
Ch. 27 - ______ Aquatic microorganisms are more prevalent...Ch. 27 - _______ Abyssal organisms are found near shores of...Ch. 27 - Leaching of compounds from mine tailings often...Ch. 27 - Biogeochemical cycling involves three primary...Ch. 27 - Nitrogen exists primarily as ______ in the...Ch. 27 - Label the general phases in the carbon cycle.Ch. 27 - Prob. 1CTCh. 27 - Prob. 2CT
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- Diseases that involve biofilm-producing bacteria are serious concern. They are not easily treated compared with those involving free-floating bacteria. Explain three reasons why biofilm formers are more pathogenic.arrow_forwardExplain the formation of biofilm.arrow_forwardDiscuss why the presence of biofilms may be beneficial tomicrobes yet problematic to humans.arrow_forward
- Give the name of 10 places where biofilms can be found.arrow_forwardMycobacterium tuberculosis infects the upper regions of the lungs. This bacteria is classified as a(n)___. aerobe thermophile saprophyte anaerobearrow_forwardBacteria of the genus Listeria, grows best aerobically, but can survive when there is no or very little oxygen. This characteristic classifies them as ___. obligate anaerobes obligate aerobes psychrophiles facultativearrow_forward
- Which of the following types of bacteria can contaminate water sources in hospitals and also cause pulmonary diseases or infections? Question 9 options: Mycobacterium spp. Hydrobacterium spp. Escherichia coli Shigella spp.arrow_forwardDescribe a detrimental and a beneficial effect of biofilms.arrow_forwardWhat type of microbe would most likely cause food spoilage in the refrigerator? Othermophile mesophile Opsychrophile psychrotropharrow_forward
- List environmental factors that influence microbial growth with a particular emphasis on oxygenarrow_forwardWhen a housefly carries microbes on its surface and contaminates food or an open wound with those microbes, the fly is classified as ___. transporter biological vector mechanical vector fomitearrow_forwardBacteria that prefer to grow at room temperature at low pH are: Mesophilic acidophiles Microaerophilic alkalophiles Psycrophilic neutraphiles Thermophilic acidophilesarrow_forward
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