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Oxygen

Definition

noun

(chemistry) A colorless, tasteless, oderless, gaseous element that abounds in the atmosphere.


Supplement

In chemistry, oxygen is an element with an atomic weight of 15.96. It is capable of combining with all elements, with the exception of fluorine, to form oxides, bases, oxyacid anhydrides, etc. At room temperature, oxygen is only moderately active with most substances. However, at higher temperatures, it becomes very active that it is considered as one of the most powerful chemical agents.

In biology, the oxygen plays a crucial role in various biochemical and physiological processes, such as in cellular respiration. Its presence makes cellular respiration about ten times more efficient in yielding ATP.

Oxygen is also thought to have a therapeutic role especially to treating or managing ischemic tissues.


Word origin: F. Oxygene, from Gr. Sharp, acid _ root of to be born; named by Lavoisier as he supposed it to be a constituent of al 1000 l acids
Related forms: oxygenic (adjective)

Symbol: O

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... are almost nothing more than uncooked sewerage. Extreme droppings can bring on an increased plant progress which sales opportunities to reduced oxygen stages in the water. This improved plant progress can cause fish kills and affect other aquatic wildlife. It can direct to closing of swimming ...

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by goosecanadaca
Sat Oct 04, 2014 8:05 pm
 
Forum: Molecular Biology
Topic: Choosing A Black Or Brown Duvet For Sleep Room
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Views: 12

Re:

... with someone else isn't very helpful either... I think you can use a test, where semi-solid agar taken in test tube, which will a gradation of oxygen concentration. Surface have normal oxygen concentration and when we go downwards its concentration gradualy decreases. At near bottom there is ...

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by sosippus
Wed Sep 24, 2014 7:44 pm
 
Forum: Microbiology
Topic: Oxygen requirements of eukaryotes
Replies: 3
Views: 337

Oxygen requirements of eukaryotes

I think you can use a test, where semi-solid agar taken in test tube, which will a gradation of oxygen concentration. Surface have normal oxygen concentration and when we go downwards its concentration gradualy decreases. At near bottom there is no oxygen at all. If we ...

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by josem
Wed Sep 24, 2014 5:28 pm
 
Forum: Microbiology
Topic: Oxygen requirements of eukaryotes
Replies: 3
Views: 337

Oxygen requirements of eukaryotes

Hi! Is any of you aware of any resources where I can find information about the oxygen requirement for growth of eukaryotes? As an example, say I'd like to know whether Candida dubliniensis, Lodderomyces elongisporus or Encephalitozoon intestinalis are aerobes, ...

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by sosippus
Tue Sep 16, 2014 10:22 am
 
Forum: Microbiology
Topic: Oxygen requirements of eukaryotes
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Views: 337

Electron transport chain

The electrons are passed through molecules in the membrane, so the oxygen is not much accessible to them.

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by JackBean
Wed Jun 25, 2014 12:19 pm
 
Forum: Cell Biology
Topic: Electron transport chain
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