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Dictionary » O » Obligate

Obligate

Definition

adjective

(general) Compulsory; restricted to a set of parameters or conditions; having no alternative system or pathway.

(biology) Capable of functioning or surviving only in a particular condition or by assuming a particular behavior.


Supplement

This descriptive term, which means 'by necessity' is used mostly in biology, such as the following:


Word origin: L obligātus (ptp. of obligāre to bind).

Compare: facultative.


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Anaerobic bacteria in wounds

Obligate anaerobes are able to infect deep wounds, tissues and organs which are poorly oxygenated.

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by Sepals
Mon Mar 23, 2009 11:47 am
 
Forum: Microbiology
Topic: Anaerobic bacteria in wounds
Replies: 3
Views: 514

Anaerobic bacteria in wounds

... you don't get much blood flow as capillaries are cut, therefore low concentrations of oxygen. It also depends on the type of anaerobe- Faculative, obligate or aerotolerant. Not all anaerobic bacteria are obligates(will die when exposed to oxygen). They can be faculative(can use oxygen if present) ...

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by futurezoologist
Sun Mar 22, 2009 11:43 am
 
Forum: Microbiology
Topic: Anaerobic bacteria in wounds
Replies: 3
Views: 514

Re: Modern mitochondria

... Mitochondria as a product of endosymbiosis - is a theory, not a fact as you treat it here. Why would you expect them to have been obligate anaerobes? They possess cytochromes - not usually found in anaerobes - and use oxygen as terminal electron acceptor.

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by JorgeLobo
Fri Feb 27, 2009 12:42 pm
 
Forum: Microbiology
Topic: Modern mitochondria
Replies: 11
Views: 1267

Modern mitochondria

... as mitochondria become inactive during periods of oxygen debt, what is probably true of thier alpha proteobacterial ancestors? a. they were obligate aerobes and herterotrophs b. they were obligate aerobes and autotrophs c. they were obligate anaerobes and autotrophs d. they were obligate ...

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by KING2010ORAYL
Thu Feb 26, 2009 10:44 pm
 
Forum: Microbiology
Topic: Modern mitochondria
Replies: 11
Views: 1267

Beginner Biology I NEED HELP PLEASE PLEASE!!

... place where starch digestion begins. The place where bile salts are made putting activities in correct order. 1.Absorbtion of vitamins produced by obligate anaerobic. 2.Acid chyme is neutralized. 3.Digestion of starch by salivary amylase. 4.Glucose is absorbed into the bloodstream 5.Passage of ...

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by jlb2000
Tue Sep 02, 2008 9:01 pm
 
Forum: Cell Biology
Topic: Beginner Biology I NEED HELP PLEASE PLEASE!!
Replies: 7
Views: 1972
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