Microbiology: A Systems Approach
5th Edition
ISBN: 9781259706615
Author: Marjorie Kelly Cowan Professor
Publisher: McGraw-Hill Education
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Chapter 7, Problem 14TF
Summary Introduction
Concept introduction:
Osmophiles are the microbes that thrive in hypertonic condition; they prefer to live in habitats containing a high content of solutes. These microorganisms include halophiles, which thrive in habitats containing high concentrations of salt, such as saltwater lakes and ponds.
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An aquatic microbe that can grow only near the surface of the water is probably which of the following?
a chemotroph
a phototroph
a heterotroph
an anaerobe
a lithotroph
Which group of microorganisms requires high osmotic pressure to survive?
Osmolyphiles
Facultative halophiles
Obligate halophiles
Acidophiles
Obligate halophiles AND Osmolyphiles
Microbes that can survive and thrive in extreme environments are
called extremophiles. In this context, what term is the most
accurate to describe the microbes that can grow in salty
wastewater?
Acidophiles
Psychrophiles
Thermophiles
O Halophiles
Chapter 7 Solutions
Microbiology: A Systems Approach
Ch. 7.1 - List the essential nutrients of a bacterial cell.Ch. 7.1 - Prob. 2AYPCh. 7.1 - List and define four different terms that describe...Ch. 7.1 - Define saprobe and parasite, and provide microbial...Ch. 7.1 - Prob. 5AYPCh. 7.1 - Identify the effects of isotonic, hypotonic, and...Ch. 7.1 - Name two types of passive transport and three...Ch. 7.2 - List and define five terms used to express a...Ch. 7.2 - Prob. 9AYPCh. 7.2 - Prob. 10AYP
Ch. 7.2 - Prob. 11AYPCh. 7.2 - Discuss characteristics of biofilms that...Ch. 7.3 - Summarize the steps of cell division used by most...Ch. 7.3 - Define doubling time and describe how it leads to...Ch. 7.3 - Compare and contrast the four phases of growth in...Ch. 7.3 - Prob. 16AYPCh. 7 - The source of the necessary elements of life is a....Ch. 7 - An organism that can synthesize all its required...Ch. 7 - Chemoautotrophs can survive on ______ alone. a....Ch. 7 - Prob. 4MCQCh. 7 - Prob. 5MCQCh. 7 - Prob. 6MCQCh. 7 - A cell exposed to a hypertonic environment will...Ch. 7 - Prob. 8MCQCh. 7 - Prob. 9MCQCh. 7 - In a viable plate count, each _____ represents a...Ch. 7 - Prob. 11TFCh. 7 - Prob. 12TFCh. 7 - Prob. 13TFCh. 7 - Prob. 14TFCh. 7 - A facultative anaerobe can grow with or without...Ch. 7 - Prob. 1CTQCh. 7 - Describe the process used by a saprobic microbe to...Ch. 7 - Prob. 3CTQCh. 7 - Explain what is happening to the bacterial...Ch. 7 - Prob. 5CTQCh. 7 - Prob. 1VCCh. 7 - Using the words that follow, please create a...
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- Bacteria that require an atmosphere strictly of CO2 for growth is called:arrow_forwardLook at the following diagrams and predict in which directionosmosis will take place. Use arrows to show the net direction ofosmosis. Is one of these microbes a halophile? Which one?arrow_forwardBacteria that prefer to grow at room temperature at low pH are: Mesophilic acidophiles Microaerophilic alkalophiles Psycrophilic neutraphiles Thermophilic acidophilesarrow_forward
- Which of the following terms is NOT used to describe microbes thrive in different temperature ranges? Thermophiles Psychrophiles O Mesophiles O Halophilesarrow_forwardWhich of the following is NOT typical of Halophiles? Choose all that fit the sentence above. Group of answer choices They have peptidoglycan in their cell walls. They have branched lipid membranes They contain colored pigments in their cell membranes They live in high salt conditionsarrow_forwardWhich 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_forward
- Which of the following is most likely to be used for sewage treatment? View Available Hint(s) for Part D Acidophiles Methanogens Halophiles Hyperthermophilesarrow_forwardWhat type of microbes can not be effectively killed by low temperature (i.e. freezing) treatment? methogens thermophiles mesophiles psychrophiles halophilesarrow_forwardDescribe a detrimental and a beneficial effect of biofilms.arrow_forward
- Archaea that live in an extremely high pH levels are called hyperalkaliphiles. Select one: True Falsearrow_forwardDiseases that involve biofilm-producing bacteria are of serious concern. They are not as easily treated compared with those involving free-floating (or planktonic) bacteria. Explain three reasons why biofilms can be more pathogenic.arrow_forwardIn what environments might the following organisms be found?a. hyperthermophile b. thermophile c. mesophile d. psychrophilearrow_forward
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