Microbiology: A Systems Approach
5th Edition
ISBN: 9781259706615
Author: Marjorie Kelly Cowan Professor
Publisher: McGraw-Hill Education
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Chapter 7, Problem 8MCQ
Summary Introduction
Introduction:
Psychrophiles are the microorganisms that only thrive below the temperature of
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Select the correct answer from the answers provided. Psychrophiles would be expected to grow a. in hot springs c. at refrigeration temperatures b. on the human body d. at low pH
Microorganisms that require carbon dioxide for growth are called: *
A)Psychrophiles
B)Capnophiles
C)halophiles
D)Mesophiles
Some marine bacteria, such as Cytophaga species, live and grow well inside fish guts and in waters below freezing temperatures. These bacteria are:
a) Halophilic
b) Psychrophilic
c) Friophilic
d) Thermophilic
e) Mesophilic
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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- On what basis were both Shigella and Salmonella eliminated aspossible causes of the outbreak pathogen?a. Gram reaction b. fermentation of glucose c. oxidase results d. motilityarrow_forwardA microbe causing a bloodstream infection is likely all of the following except A. A chemotroph B. A parasite C. A heterotroph D. A thermophilearrow_forwardExplain why gram negative bacteria in general are more toxic than gram positive bacteria.arrow_forward
- Strict anaerobes cannot live in the presnece of oxgyen because: a.)they have to mitochondria b.) they cannot absord nutrients from the envioment c.)they cannot make macromolcules d.) they lack detoxifing enzymes e.) they cannot make ATP oragnisms need phosphorous to incoroprate it in their: a.) cell membrane b.) DNA and RNA c.) ATP d.) a and c e.) a, b, and carrow_forwardIf an organism feeds on dead or dying organisms that this mode of feeding is called: a) Heterotroph b) Chemoheterotroph c) Chemolithoautroph d) Chemolithoorganotroph e) Saprobicarrow_forwardA hyperthermophile most likely has: a) cryoprotectants b) low void volume proteins c) unsaturated fatty acids d) isoprenoid lipidsarrow_forward
- Which of the following groups of microbes is most likely to be associated with humans? A psychrophiles. B thermophiles C hyperthermophiles D mesophiles.arrow_forwardBacteria that thrive in puncture wounds are likely to be (a) aerobes (b) photoautotrophs (c) chemoautotrophs (d) endospores (e) obligate anaerobesarrow_forward) Most human bacterial pathogens are labeled as __ according to their temperature requirement: a) Aerophiles b) Aerobes c) Anaerobes d) Psychrophiles e) Mesophilesarrow_forward
- The term psychrophile? a. refers to an organism that has an optimum growth within the range of -5 to 20oC b. refers to an organism that has an optimum growth at near neutral pHc. refers to an organism that has an optimum growth between 50 and 80oCarrow_forwardMicrobial growth is measured by what parameter?(a) Increased cell size(b) Increased size of cellular components(c) Increase in total number of cells(d) b and c(e) a and barrow_forwardChemoautotrophs can survive on ____________ alone.a. minerals b. CO2 c. minerals and CO2 d. methanearrow_forward
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