Amoeba

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Amoeba Meaning and Definition in Dictionary

Definitions from Wordnet 2.0


  • naked freshwater or marine or parasitic protozoa that form temporary pseudopods for feeding and locomotion

Definitions from Wiktionary


  • naked freshwater or marine or parasitic protozoa that form temporary pseudopods for feeding and locomotion

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Amoeba Meaning and Definition in Wikipedia


Amoeba (plural = amoebae) is a well known genus of unicellular organism, a protist. One of its most common species, the Amoeba proteus, is about 0.2 to 0.3 mm large. The amoeba was first discovered by August von Rosenhof in 1757. It is a genus of protozoa that moves with false feet, called pseudopodia.

The amoeba is a member of a whole group of amoeboid eukaryotic protists called Amoebozoa. They are heterotrophs, eating bacteria and other protists.

The pseudopodia (false feet) are extensions of the organism's cell membrane. They are used by the amoeba for phagocytosis (active food/nutrient intake) and motility (self-propelled movement).

Amoebae are often found within freshwater, typically on vegetation in decay in still or slow moving water, or in the benthic zone of some lakes. However, they are common organisms of study because it is easy to keep them in a laboratory. They are used to study protozoa and to demonstrate cell structure and function.



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'Amoeba' example sentence in quotations


* A process which led from the amoeba to man appeared to philosophers to be obviously progress -- though whether the amoeba would agree with this opinion is not known. - Bertrand Russell


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