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Topic: Obligate aerobe

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	Aerobic organism
		An aerobic organism or aerobe is an organism that has an oxygen based metabolism.
		Aerobes, in a process known as cellular respiration, use oxygen to oxidize substrates (for example sugars and fats) in order to obtain energy.
		Being an obligate aerobe, although being advantageous from the energetical point of view, means also obligatory facing high levels of oxydative stress[?].
	www.ebroadcast.com.au /lookup/encyclopedia/ob/Obligate_aerobe.html (193 words)

	Phycial and Environmental Requirements for Growth (Site not responding. Last check: 2007-10-19)
		Obligate anaerobic procaryotes may live by fermentation, anaerobic respiration, bacterial photosynthesis, or the novel process of methanogenesis.
		In aerobes and aerotolerant anaerobes the potential for lethal accumulation of superoxide is prevented by the enzyme superoxide dismutase (Figure 1).
		Obligate anaerobes lack superoxide dismutase and catalase and/or peroxidase, and therefore undergo lethal oxidations by various oxygen radicals when they are exposed to O
	lecturer.ukdw.ac.id /dhira/NutritionGrowth/physicalandenv.html (949 words)

	Obligate - Wikipedia, the free encyclopedia
		Obligate parasite, a parasite that cannot survive without its host
		Obligate aerobe, an organism that cannot survive without oxygen
		Obligate anaerobe, an organism that cannot survive in the presence of oxygen
	en.wikipedia.org /wiki/Obligate (124 words)

	Television Point \| Dictionary \| Meaning of obligate
		To bring or place under obligation, moral or legal; to hold by a constraining motive.
		That they may not incline or be obligated to any vile or lowly occupations.
		Describes a microbe (bacterium, fungus) that must have a certain element (such as oxygen) or compound present or absent in their environment; for instance, an obligate anaerobe cannot survive in an oxygen-containing environment, whereas an obligate aerobe must have oxygen or it will die.
	www.televisionpoint.com /dictionary/default.asp?define=obligate (284 words)

	Aerobic organism - Wikipedia, the free encyclopedia
		Obligate aerobes require oxygen for aerobic cellular respiration.
		Microaerophiles are organisms that may use oxygen, but only at low concentrations.
		Being an obligate aerobe, although being advantageous from the energetical point of view, means also obligatory facing high levels of oxidative stress.
	en.wikipedia.org /wiki/Aerobe (360 words)

	Differential Media - Oxygen Relationships
		[Strict or Obligate] Anaerobe: An organism that is incapable of oxygen-dependent growth and cannot grow in the presence of an oxygen concentration equivalent to that present in an air atmosphere (21% oxygen).
		The observed growth patterns of organisms in this medium determine their oxygen relationship designations (strict aerobe, facultative anaerobe, etc.) which correlate with such physiological abilities as respiration, fermentation and the catalase reaction and also whether there is an inhibitory effect on the organism in the presence of air.
		Thus, a description of a chemoheterotrophic organism as a "strict aerobe" can imply a number of associated characteristics that may be unnecessary to specify separately (able to respire, unable to ferment, catalase-positive, azide-sensitive, etc.).
	www.jlindquist.net /generalmicro/dfthiognf.html (1595 words)

	Highbeam Encyclopedia - Search Results for obligate
		Once considered a part of the plant kingdom, bacteria were eventually placed in a separate kingdom, Monera.
		Find newspaper and magazine articles plus images and maps related to "obligate" at HighBeam.
		New cable ownership rules obligate the FCC to dismiss an Internet company's request for eligibility to demand leased access on cable systems.(Brief Article)
	www.encyclopedia.com /searchpool.asp?target=obligate (232 words)

	Non Nutrient Factors Affecting Growth
		An aerobe is a microorganism that can utilize molecular oxygen as its final electron acceptor, i.e., as in cellular (aerobic) respiration.
		An obligate aerobe is a microorganism that cannot live in the absence of molecular oxygen.
		One usage of the term obligate anaerobe is to describe only those microorganisms which are unable to grow (and, for that matter, even survive) in the presence of molecular oxygen.
	www.mansfield.ohio-state.edu /~sabedon/biol2020.htm (2053 words)

	Archae bacteria and Eubacteria (archaeubact_1.html)
		There are two types of aerobic bacteria: obligate aerobe (must use cellular respiration) and facultative anaerobe (can use oxygen to respire or can ferment).
		These are obligate intracellular g- parasites that are the cause the most common disease.
		obligate anaerobes ("purple"): many flagellated, found in watery sediments, include all phototrophs.
	library.thinkquest.org /C006669/data/Biol/archaeubact_1.html (867 words)

	obligate - Definitions from Dictionary.com
		Biology Able to exist or survive only in a particular environment or by assuming a particular role: an obligate parasite; an obligate anaerobe.
		bind by an obligation; cause to be indebted; "He's held by a contract"; "I'll hold you by your promise" [syn: oblige]
		An obligate aerobe, such as certain bacteria, can live only in the presence of oxygen.
	dictionary.reference.com /browse/obligate (401 words)

	Kligler
		Although there is a small zone at the bottom where no growth occurs, this is probably due to incomplete mixing of the original inoculum into the medium.
		Obligate aerobe: Growth is restricted to the surface and, at most, a small depth into the medium (indicated with the bracket).
		Although the depth of the zone will differ among species depending upon how inhibitory oxygen is to their growth, typically the zone is only a few millimeters deep.
	www.marietta.edu /~spilatrs/biol202/labresults/ftg_oxygen.html (160 words)

	Microbiology Exam #2-Fall 2005 (Site not responding. Last check: 2007-10-19)
		3.___A__The disinfectant hydrogen peroxide would be most effective in killing bacteria with this type of oxygen requirement: a) obligate anaerobe; b) obligate aerobe; c) microaerohile; d) capnophile; e) facultative anaerobe.
		Agree-Assuming that better smelling clothes have fewer bacteria, clothes hung outside that are exposed to UV radiation (which kills bacteria) will smell better than clothes hung indoors (where they will not be exposed to UV radiation).
		An obligate aerobe must be able to produce the enzyme superoxide dismutase in order to survive.
	www.franklincollege.edu /bioweb/bio260sb/bio260sb_exam22.htm (1514 words)

	BIOLOGY 251 Lab study guide 1
		Know the following bacterial characteristics: obligate aerobes, facultative anaerobes, obligate anaerobes, aerotolerant anaerobes, microaerophiles.
		The organisms you studied in week 5 are: Mycobacterium tuberculosis (acid-fast bacterium), Klebsiella pneumoniae (a bacterium with a capsule), Proteus vulgaris (motile, facultative anaerobe), Bacillus subtilis (motile, obligate aerobe), Micrococcus luteus (nonmotile, obligate aerobe), Staphylococcus epidermidis (nonmotile, facultative anaerobe), Clostridium sporogenes (obligate anaerobe), Escherichia coli (facultative anaerobe)
		Be able to recognize ALL of the organisms mentioned in this guide on a slide under a microscope, on a plate, in a tube.
	www.unlv.edu /staff/wmojica/bio251exam1sg.htm (623 words)

	Bacterial nutrition, growth and energy metabolism
		Optimal temperature, pH and the need (or lack of need for oxygen) are important.
		Obligate aerobes must grow in the presence of oxygen; they cannot carry out fermentation.
		Obligate anaerobes do not carry out oxidative phosphorylation.
	pathmicro.med.sc.edu /fox/nutrition.htm (1013 words)

	MEDICAL MICROBIOLOGY OUTLINES FOR NURSES
		Obligate aerobe grow only in presence of oxygen.
		Obligate anaerobe grow only in absence of oxygen (oxygen is toxic).
		Facultative anaerobe grow in presence or absence of oxygen.
	www.angelfire.com /dc2/drsherif/bacnut2.html (74 words)

	obligate aerobe - OneLook Dictionary Search
		Tip: Click on the first link on a line below to go directly to a page where "obligate aerobe" is defined.
		obligate aerobe : Stedman's Online Medical Dictionary, 27th Edition [home, info]
		Obligate aerobe : Biological Sciences Dictionary [home, info]
	www.onelook.com /?w=obligate+aerobe&ls=a (99 words)

	Regulation of Cytochrome bd Expression in the Obligate Aerobe Azotobacter vinelandii by CydR (Fnr). SENSITIVITY TO ...
		Regulation of Cytochrome bd Expression in the Obligate Aerobe Azotobacter vinelandii by CydR (Fnr).
		Azotobacter vinelandii is an obligately aerobic bacterium in which aerotolerant nitrogen fixation requires cytochrome bd.
		Azotobacter vinelandii is an obligate aerobe that fixes nitrogen under a wide range of oxygen concentrations, even at air
	www.jbc.org /cgi/content/full/275/7/4679 (5769 words)

	BI 480, Lecture 7
		Facultative (facultative aerobe = facultative anaerobe); should have no pink
		Obligate aerobe: cannot grow in the absence of O
		Microaerophile: requires oxygen, but at a concentration less than that of air (technically, such organisms are both aerobes and strict anaerobes)
	methanogens.pdx.edu /boone/courses/BI480/Lectures/BI480Lec07.html (781 words)

	JGI Thiobacillus denitrificans Home
		Thiobacillus denitrificans is a widely distributed and well-characterized obligate chemolithoautotrophic bacterium with an unusual metabolic repertoire that is relevant to environmental concerns.
		The mechanism by which this species can use solid-phase electron donors that cannot be taken into the cell is of considerable interest but is currently unknown.
		The genome sequence of the obligately chemolithoautotrophic, facultatively anaerobic bacterium Thiobacillus denitrificans.
	genome.jgi-psf.org /finished_microbes/thide/thide.home.html (456 words)

	Bact. 303 Study Questions II
		How is the relationship to O2 similar in metabolism of obligate aerobes and microaerophiles?
		Why can't obligate aerobes grow in the absence of O2?
		What is the chemical mechanism of oxygen toxicity in obligate anaerobes?
	www.bact.wisc.edu /Bact303/Bact303Pquest2 (876 words)

	subques1
		An organism that is said to be an "obligate aerobe" means the organism
		Which of the following would have the enzymes necessary to detoxify oxygen; namely, superoxide dismutase and either catalase or peroxidase: obligate aerobes, obligate anaerobes, facultative anaerobes, aerotolerant anaerobes?
		The medium is inoculated and is incubated, shaking, at 37oC.
	www.ndsu.nodak.edu /instruct/lyrust/subques1.htm (2195 words)

	Arthrobacter
		Arthrobacter is a common genus of soil bacteria.
		All species in this genus are Gram-positive, obligate aerobes.
		Like many soil bacteria, this genus is metabolically versatile, producing many different enzymes allowing it to grow on a wide range of substrates.
	www-micro.msb.le.ac.uk /Video/Arthrobacter.html (277 words)

	Bio 132 study list for Midterm I
		Whereas eukaryotes are usually obligate aerobes, the capacity for anaerobic growth is common among prokaryotes.
		Vocabulary: osmotolerant, halophile, acidophile, alkalophiles, thermophile, pyschrophile, pyschrotroph, mesophile, barophile, barotolerant, aerobe, obligate aerobe, anaerobe, facultative anaerobe, obligate anaerobe, microaerophile
		What defenses do aerobes have against reactive oxygen species?
	www.bio.brandeis.edu /classes/biol132a/Studylist1.html (1071 words)

	Roseateles depolymerans gen. nov., sp. nov., a new bacteriochlorophyll a-containing obligate aerobe belonging to the ...
		nov., a new bacteriochlorophyll a-containing obligate aerobe belonging to the beta-subclass of the Proteobacteria -- Suyama et al.
		nov., a new bacteriochlorophyll a-containing obligate aerobe belonging to the beta-subclass of the Proteobacteria
		(BChl) a-containing obligate aerobes to be classified in the beta-subclass
	ijs.sgmjournals.org /cgi/content/abstract/49/2/449 (572 words)

	Untitled Document
		By comparing and contrasting the cell walls of Gram positive and Gram negative bacteria, explain the differential staining results obtained with a Gram stain?
		Diagram the growth one would expect for a facultative anaerobe, an obligate aerobe, an obligate anaerobe and an aerotolerant anaerobe in deep culture slants?
		What enzyme would you expect to be present in facultative anaerobes, obligate aerobes and aerotolerant anaerobes which would not be found in obligate anaerobes?
	microvet.arizona.edu /Courses/MIC285/Problemsets.html (1746 words)

	Franklin College - Biology Department (Site not responding. Last check: 2007-10-19)
		___A__ The disinfectant hydrogen peroxide would be most effective in killing bacteria with this type of oxygen requirement: a) obligate anaerobe; b) obligate aerobe; c) microaerohile; d) capnophile; e) facultative anaerobe.
		4.___D__Although these organisms have catalase and superoxide dismutase, they ferment in the presence or absence of oxygen: a) facultative anaerobe; b) microaerophile; c) obligate anaerobe; d) aerotolerant anaerobe; e) capnophile.
		Bacterial types: obligate anaerobe__III_____, aerotolerant anaerobe___II_____, obligate aerobe___I__, facultative anaerobe__I___, and microaerophile.___I__
	www.franklincollege.edu /bioweb/bio260sb/bio260sb_exam10.htm (1996 words)

	New Page 1
		Explain how extremes in pH and excessive heat inhibit microbial growth.
		What are SOD and catalase and how do the affect the growth of obligate anaerobes?
		What is the Pasteur effect and in which group of microbes is it observed?
	www2.volstate.edu /rhackney/Biol2230Review2.htm (483 words)

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