A microorganism that can survive in partial or complete absence of molecular oxygen.
An organism that lives in the absence of oxygen and generally cannot grow in the presence of oxygen. The catabolic metabolism of anaerobic microorganisms reduces a variety of organic and inorganic compounds in order to survive (e.g., carbon dioxide, sulfate, nitrate, fumarate, iron, manganese); and anaerobes produce a large number of end products of metabolism (e.g., acetic acid, propionic acid, lactic acid, ethanol, methane, etc.).
An organism capable of growing in the absence of atmospheric oxygen, anaerobic.
A microorganism that lives only in absence of oxygen.
Microorganisms that grow in the absence of oxygen. Obligate anaerobes cannot survive in the presence of oxygen, facultative anaerobes grow in the presence or absence of oxygen.
Organisms which grow in the absence of oxygen or air.
A microorganism which lives without oxygen, e.g. the tetanus bacillus.
Micro-organisms able to grow in an atmosphere devoid of oxygen. If also capable of growth in an oxygenated atmosphere, they are termed facultative anaerobes. Obligate anaerobes are those which are cultivable only when the conditions of growth exclude free oxygen. Anaerobic cultivation methods include: (1) incubation in a sealed vessel (Mclntoch and Fildes’ jar) from which the last traces of oxygen are removed by catalysed combination with hydrogen; (2) inclusion of reducing substances (glucose, sodium thioglycollate, ascorbic acid etc) in a semi-solid nutrient agar base; (3) iron filings or strips in liquid media; (4) growth in the lower levels of deep agar tubes.
Any organism, especially a microbe, that is able to live and grow in the absence of free oxygen. A facultative anaerobe is a microorganism that grows best in the presence of oxygen but is capable of some growth in its absence. An obligate anaerobe can grow only in the absence of free oxygen. Compare aerobe, microaerophilic.
The term applied to bacteria having the power to live without air. Such organisms are found growing freely, deep in the soil — as, for example, the tetanus bacillus.
A microorganism that can live and reproduce in the absence of oxygen.
Anaerobic bacteria, a specific category of microorganisms, possess the remarkable ability to survive and thrive without the presence of air or oxygen. These bacteria often serve as common culprits in the development of lung abscesses.
A microorganism, such as a bacillus, that can survive and grow in environments without air or oxygen.