Obligate aerobe

Obligate aerobe
Aerobic and anaerobic bacteria can be identified by growing them in liquid culture:
1. Obligate aerobe
2. Obligate anaerobe
3. Facultative anaerobic organism (continuum with "Facultative aerobic organism")
4. Microaerophile
5. Aerotolerant

An obligate aerobe is an aerobic organism that requires oxygen to grow. Through cellular respiration, these organisms use oxygen to oxidize substances, like sugars or fats, in order to obtain energy. During respiration, they use oxygen as the terminal electron acceptor. They have the advantage of yielding more energy than obligate anaerobes, but face high levels of oxidative stress.[1]

Examples of obligate aerobic bacteria: Nocardia (Gram-positive), Mycobacterium tuberculosis (acid-fast), and Bacillus (Gram-positive).

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M: BAC

bact (clas)

gr+f/gr+a(t)/gr-p(c)/gr-o

drug(J1p, w, n, m, vacc)

References

  1. ^ "Obligate aerobe - definition from Biology-Online.org." Biology Online. Biology-Online, n.d. Web. 12 Dec 2009. <http://www.biology-online.org/dictionary/Obligate_aerobe>

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Look at other dictionaries:

  • obligate aerobe — a microorganism that requires molecular oxygen for growth …   Medical dictionary

  • Obligate — means by necessity (antonym facultative) and is used mainly in biology in phrases such as: Obligate aerobe, an organism that cannot survive without oxygen Obligate anaerobe, an organism that cannot survive in the presence of oxygen Obligate air… …   Wikipedia

  • Obligate anaerobe — Aerobic and anaerobic bacteria can be identified by growing them in liquid culture: 1. Obligate aerobe 2. Obligate anaerobe 3. Facultative anaerobic organism (continuum with Facultative aerobic organism ) 4. Microaerophile 5. Aerotolerant… …   Wikipedia

  • obligate — Without an alternative system or pathway. [L. ob ligo, pp. atus, to bind to] * * * ob·li·gate äb li gət, lə .gāt adj 1) restricted to one particularly characteristic mode of life or way of functioning <the infant is an obligate nose breather… …   Medical dictionary

  • aerobe — /air ohb/, n. an organism, esp. a bacterium, that requires air or free oxygen for life (opposed to anaerobe). [1875 80; AER + (MICR)OBE] * * * ▪ microbiology       an organism able to live and reproduce only in the presence of free oxygen (e.g.,… …   Universalium

  • aerobe — 1. An organism that can live and grow in the presence of oxygen. 2. An organism that can use oxygen as a final electron acceptor in a respiratory chain. [aero + G. bios, life] obligate a. an …   Medical dictionary

  • Aerobic organism — Aerobic and anaerobic bacteria can be identified by growing them in a liquid culture: 1: Obligate aerobic bacteria gather at the top of the test tube in order to absorb maximal amount of oxygen. 2: Obligate anaerobic bacteria gather at the bottom …   Wikipedia

  • Bacillus subtilis — Taxobox image caption = TEM micrograph of a B. subtilis cell in cross section (scale bar = 200 nm). regnum = Bacteria phylum = Firmicutes classis = Bacilli ordo = Bacillales familia = Bacillaceae genus = Bacillus species = B. subtilis binomial =… …   Wikipedia

  • aerophil, aerophile — 1. Air loving. 2. An aerobic organism (aerobe), especially an obligate aerobe. [aero + G. philos, fond] …   Medical dictionary

  • Halobacterium salinarum — Taxobox color = darkgray name = Halobacterium salinarum domain = Archaea phylum = Euryarchaeota classis = Halobacteria ordo = Halobacteriales familia = Halobacteriaceae genus = Halobacterium binomial = Halobacterium salinarum binomial authority …   Wikipedia

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