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| | OBLIGATE - Definition |
 | | That they may not incline or be obligated to any vile or lowly occupations. | | | [adj] (biology) restricted to a particular condition of life; "an obligate anaerobe can survive only in the absence of OXYGen" | | | 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. |
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http://www.hyperdictionary.com/dictionary/obligate
(284 words)
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| | Differential Media - Oxygen Relationships (Official Page) |
| | Secondarily, the oxygen relationship designations derived from the growth observations (strict aerobe, facultative anaerobe, etc.) can be helpful in comparative studies of the physiologies of these organisms. | | | I. In the most general sense, living organisms can be classified according to "oxygen relationships" as follows: (1) strict (or obligate) aerobes – those which require O | | | However, it does not function as such for organisms which obtain energy from fermentation, photosynthesis or anaerobic respiration. |
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http://www.jlindquist.net/generalmicro/dfthiognf.html
(1440 words)
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| | Non Nutrient Factors Affecting Growth |
| | Many anaerobes not only can't utilize molecular oxygen but are harmed by it as well. | | | 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. | | | The other, less strict usage of the term obligate anaerobe is simply to distinguish the term "anaerobe" from the term "facultative anaerobe." |
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http://www.mansfield.ohio-state.edu/~sabedon/biol2020.htm
(2053 words)
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| | Aerobic organism - Wikipedia, the free encyclopedia |
| | An aerobic organism or aerobe is an organism that has an oxygen based metabolism. | | | Being an obligate aerobe, although being advantageous from the energetical point of view, means also obligatory facing high levels of oxidative stress. | | | However, for the whole organism this cannot be sustained for long, and humans are therefore obligate aerobes. |
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http://en.wikipedia.org/wiki/Aerobic_organism
(266 words)
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| | Glossary |
| | The organism is an obligate, intracellular parasite of peripheral nerves, skin cells, and nasal mucosa. | | | In vivo, it is one of the slowest growing of all organisms and incubations periods in humans with a minimum of 3-5 years. |
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http://www.arches.uga.edu/~howie/Glossary.html
(59 words)
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| | [No title] |
| | Obligate aerobe Microaerophile Obligate anaerobe Facultative anaerobe Aerotolerant Applications and Identification Skills: Practicals What does each of the following looks like: — growth + growth ++ growth Be able to identify a psychrotroph, mesophile, and thermophile based on their growth patterns at different temperatures. | | | Be able to identify an obligate aerobe, a facultative anaerobe, an obligate anaerobe, a microaerophile and an aerotolerant organism in thioglycollate media. |
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http://a-s.clayton.edu/furlong/BIOL2250LAB/objectives/objectives7.doc
(96 words)
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| | Calspace - Glossary of Terms - |
| | In some cases their ancestors may never have lived in an environment with oxygen, and such obligate anaerobes may be descendants of very primitive organisms. | | | An organism, such as many bacteria or archaea, that can live in the absence of free oxygen. | | | Anaerobes may be facultative, indifferent to the presence or absence of oxygen, or obligate. |
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http://calspace.ucsd.edu/virtualmuseum/Glossary_Life/gloss_a-f.shtml
(3106 words)
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| | CONTINUOUS CULTURE GLOSSARY |
| | aerobes - organisms that thrive in well-aerated environments | | | Practical applications include high-rate propagation, destruction of wastes with control at a concentration for maximum rate, open culturing because potential contaminating organisms cannot adapt before washing out, and operation of processes that benefit from careful balance of the ratios of nutrient concentrations. |
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http://www.rpi.edu/dept/chem-eng/Biotech-Environ/Contin/glossary.htm
(565 words)
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| | Thiobacillus ferrooxidans |
| | ferrooxidans is generally assumed to be obligately aerobic, but under anaerobic conditions, T. |
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http://www.mines.edu/fs_home/jhoran/ch126/thiobaci.htm
(136 words)
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| | Obligate |
| | Obligate anaerobe An organism that cannot use oxygen and is poisoned by it. | | | Obligate aerobe An organism that requires oxygen for cellular respiration and cannot live without it. | | | Oceanic zone The region of water lying over deep areas beyond the continental shell |
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http://www.biocore.uwo.ca/prelab/glossary/GlossaryO.htm
(662 words)
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| | Lab Exam 2 |
| | What bacterial structures might be present that would interfere with the UV light treatment? | | | Give an example of a genus which are facultative anaerobes. | | | Give an example of a genus which are obligate aerobes. |
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http://people.eku.edu/piercem/lab_exam_2.htm
(538 words)
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| | Chapter 27 Notes |
| | Facultative anaerobe – can use 02 if present, can function without 02 | | | Some ancient organisms had light capturing pigments that could drive chemosynthesis and 02 would be produced – 02 atmosphere would not favor anaerobes | | | Obligate anaerobe – poisoned by 02, use fermentation, or use molecules other than 02 to be final electron acceptors |
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http://gtjhs.fcps.org/Shaw/Chpt27Notes.htm
(161 words)
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| | [No title] |
| | Rhodobacter d) many cyanobacteria e) obligate aerobes such as Azotobacter Since nitrogenase is inactivated by O2, the fixation of N2 must occur under conditions which are anaerobic at least locally. | | | Facultative organisms such as purple photosynthetic bacteria or Klesbsiella fix N2 only when anaerobic. | | | Some N-fixing bacteria are free-living whereas other form symbiotic associations with plants. |
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http://www.science.siu.edu/microbiology/Micr425/NitrogenFix02
(1975 words)
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| | Lab 2 (part 2) Answer Key |
| | Fill in the chart below by indicating whether you think each of these organisms is an obligate anaerobe, facultative anaerobe, or obligate aerobe, based on the location of the growth in the tubes. | | | The graph is drawn to match the results in the table, but you didn't lose any points if your graph matched your observed data. |
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http://english.sxu.edu/~visick/lab2bkey.htm
(285 words)
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| | Bact. 303 Study Questions II |
| | Explain the following terms as they relate to a bacterium's response to molecular oxygen (O2). | | | Why can't obligate aerobes grow in the absence of O2? | | | How is the relationship to O2 similar in metabolism of obligate aerobes and microaerophiles? |
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http://www.bact.wisc.edu/Bact303/Bact303Pquest2
(880 words)
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| | Hardy Diagnostics: Glossary |
| | An adjective referring to an environmental factor (for example, oxygen) which is always required for growth, for example, obligate aerobe. | | | An organism which can grow only in the presence of oxygen (O |
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http://www.hardydiagnostics.com/Glossary-O.html
(718 words)
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| | obligate - OneLook Dictionary Search |
| | obligate : The On-line Medical Dictionary [home, info] | | | Example: "An obligate anaerobe can survive only in the absence of OXYGen" | | | verb: bind by an obligation; cause to be indebted |
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http://www.onelook.com/cgi-bin/cgiwrap/bware/dofind.cgi?word=obligate
(254 words)
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| | [No title] |
| | _______________ are obligate intracellular pathogens that cause diseases such as trachoma, inclusion conjunctivitis, and urethritis. | | | _______________ are obligate intracellular pathogens that cause diseases such as typhus and Rocky Mountain spotted fever. | | | The cell walls of archaeans contain a thicker layer of peptidoglycan than bacterial cell walls. |
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http://connection.lww.com/Products/burton/documents/ByChapter/Ch04.doc
(364 words)
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| | 8.growth, metabolism |
| | Facultative: can grow that way (but better the other way) | | | Aerobes: oxygen serves as the terminal electron acceptor in aerobic respiration. |
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http://oregonstate.edu/instruct/mb302/field/Lecture9.htm
(525 words)
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| | Viruses and Prokaryotes |
| | Describe the distinguishing features and give examples of the methanogens, extreme halophiles, and extreme thermophiles. | | | Distinguish among obligate aerobes, facultative anaerobes, and obligate anaerobes. |
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http://www.selu.edu/Academics/Faculty/teperkins/153/5virusprok.html
(302 words)
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| | ERG24 |
| | Sterol analysis of the disrupted mutant demonstrated the accumulation of ignosterol, indicating a loss of Erg24p activity. | | | Tests with a panel of fungicides indicated that pML100 conferred significant resistance only to compounds (Fp, tridemorph, fenpropidin and azasterol) which have a shared site of action, Erg24p. | | | An insertional disruption of pML100 resulted in an obligate anaerobic phenotype, indicating a lesion in sterol biosynthesis. |
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http://www.biology.iupui.edu/research/bard/erg24.html
(377 words)
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| | Bacteria Binomials |
| | replicates in (i.e., is obligate intracellular parasite of) periplasmic space of other gram negative bacteria |
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http://www.mansfield.ohio-state.edu/~sabedon/biol4045.htm
(674 words)
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| | JGI Thiobacillus denitrificans Home |
| | denitrificans differs from many known chemolithotrophic sulfur-oxidizing bacteria (such as Acidithiobacillus ferrooxidans) in that it is a facultative anaerobe (it can respire aerobically or via denitrification) rather than an obligate aerobe and lives at circumneutral rather than acidic pH. | | | 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. | | | Thiobacillus denitrificans is a widely distributed and well-characterized obligate chemolithoautotrophic bacterium with an unusual metabolic repertoire that is relevant to environmental concerns. |
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http://genome.jgi-psf.org/finished_microbes/thide/thide.home.html
(426 words)
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| | Pathology Lecture Summary |
| | Outcome greatly affected by type and magnitude of host response thru CMI and delayed-type hypersensitivity | | | TUBERCULOSIS — M. tuberculosis-obligate aerobe, slow-growing (cultures take a long time, spread by aerosole |
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http://www.uic.edu/depts/mcpt/curriculum/inf3_ca_lecture.html
(458 words)
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| | Untitled Document |
| | What enzyme would you expect to be present in facultative anaerobes, obligate aerobes and aerotolerant anaerobes which would not be found in obligate anaerobes? | | | Diagram the growth one would expect for a facultative anaerobe, an obligate aerobe, an obligate anaerobe and an aerotolerant anaerobe in deep culture slants? | | | By comparing and contrasting the cell walls of Gram positive and Gram negative bacteria, explain the differential staining results obtained with a Gram stain? |
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http://microvet.arizona.edu/Courses/MIC285/Problemsets.html
(1746 words)
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| | [No title] |
| | For the above organisms, which ones metabolize oxygen? | | | Know the definitions for the following and be able to identify each based on its growth properties in thioglycollate media and on a plate that was incubated in an anaerobic jar: Obligate aerobe Microaerophile Obligate anaerobe Facultative anaerobe Aerotolerant For the above organisms, which ones produce catalase? | | | What special properties does it have that assists us in determining the oxygen requirements of bacteria? |
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http://a-s.clayton.edu/furlong/BIOL3250/lab/objectives/objectives6.doc
(213 words)
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| | obligate_aerobe - OneLook Dictionary Search |
| | Other places to try your search for obligate aerobe: | | | General Web searches for dictionaries containing obligate aerobe: |
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http://www.onelook.com/?w=obligate_aerobe&other=1
(72 words)
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| | Arthrobacter |
| | Like many soil bacteria, this genus is metabolically versatile, producing many different enzymes allowing it to grow on a wide range of substrates. | | | Arthrobacter is a common genus of soil bacteria. | | | All species in this genus are Gram-positive, obligate aerobes. |
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http://www-micro.msb.le.ac.uk/video/Arthrobacter.html
(355 words)
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| | Arrow Scientific |
| | It is spore-forming, motile and is an obligate aerobe (although in anaerobic conditions in complex media containing glucose, weak growth and fermentation can occur). | | | It is motile, spore-forming and an obligate anaerobe. | | | It is an obligate anaerobe and is non-motile. |
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http://www.arrowscientific.com.au/new/mainarticle.phtml?articlecateg=2
(444 words)
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| | Sample Questions |
| | An obligate anaerobe that produces methane by anerobic respiration | | | An obligate aerobe that uses methane as its sole C-source |
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http://www.eden.rutgers.edu/~mitts/sample4.htm
(192 words)
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