Amoeba (amoeba), a microscopic unicellular organisms, discovered in 1757 by August Johann Rosel von Rosenhof from Germany.
Formerly, the amoeba called 'Proteus' refers to the Greek god capable of changing shape.
The word 'amibe' which means 'change' in Greek used to call these organisms by Bory de Saint-Vincent.
Amoeba can live in a variety of locations both in soil, water, and even a ride on the bodies of other organisms.
Amoeba does not have a fixed shape and looks like a blob of jelly.
With the constantly changing shape of the body, creating extensions amoeba cells known as pseudopods which help in moving.
Amoebic pseudopods also be a way to find food. The process of consuming food when the amoeba is called phagocytosis.
An essential component of the body including the amoeba is a unicellular organism nucleus, cytoplasm, and vacuoles.
Classification amoeba can be better understood through the following description.
The Kingdom - Protista
Phylum - Protozoa
Class - Sarcodina
Subclass - Rhizopoda
Order - Amoebida
Family - Amoebidae
Genus - Amoeba
Species - Proteus, animalcule, dubia, etc.
This Amoba including low-level beings because they do not have organs called as unicellular.
Amoeba belongs to a class in the phylum Protozoa Rhizopoda. In general it can be explained that the protozoan is derived from the Greek, which protos meaning first and zoon meaning animal. Thus it can be said, is the first animal Protozoa. Body protozoa is very simple, consisting of a single cell (unisel). However, Protozoa is a versatile system. All tasks can be performed by a single body cell without overlap. His size conduction 3-1000 microns. Various body shape is nothing like a ball, elongated round, like slippers or even nothing erratic form.
Also there who have fligel or ciliated. Protozoa live in water or wet places. Protozoa live in solitary or form colonies. In aquatic ecosystems protozoa are zooplankton. Protozoa body surface shadowed by a thin cell membrane, elastic, permeable, which is composed of lipoprotein material, so that it is easily changeable. Some types of protozoa have outer frame (graft) of substances and lime grit. If the condition of the neighborhood suddenly becomes ugly, Protozoa form cysts, and become active again.
Contained in the cell organelles include the nucleus, the Golgi apparatus, mikrokondria, plastids, and vakluola. Nutrition protozoa vary, there are holozoik (heterotrophic), the food in the form of other organisms, some are holofilik (autotrophs), which can synthesize their own food from organic substances with the help klorofit and light. In addition there are to be saprophytic, ie using residual organic material from dead organisms are those that are parasitic.
When compared with plants UNISEL protozoa, there are a lot of differences but there are similarities. This may be an intermediate form of the protozoan forms of plant cells to animal cells form in the course of evolution. The characteristics of the animal is prozoa as an active movement by cilia or flagen, have a cell membrane lipoproteins of substances, and there is a body shape can change. The plant is characterized as a type of protozoa that live there autotrophs. Anyone can change. The plant is characterized as a type of protozoa that live there autotrophs.
The proliferation of bacteria and amoeba.
Breeding amoebae and bacteria are usually carried out with a defense. Under appropriate conditions they hold cleavage every 15 minutes. This event begins with a division or cell nucleus into two core materials. This was followed by cleavage of the cytoplasm, into two envelops each = each cell nucleus. Furthermore, the central part of the cytoplasm of a head followed by separation of the cytoplasm. Finally after the cytoplasm has completely separated, then the formation of two new cells each = each new nucleus and cytoplasm have a new one anyway. In the amoeba when unfavorable circumstances, for example, the air is too cold or hot or eat less, then the amoeba will form into cysts. In amoeba cysts can divide themselves into amoeba-amoeba smaller new. When the state of the environment has been good again, then the cyst wall will be broken and new amoeba-amoeba was able to get out. Furthermore, these amoebae will grow after arriving at a certain size it will divide as before. Below is a picture of the division in amoeba. In bacteria there is also self-defense with the same process as above. Below is a schematic diagram of reproductive stages in dividing bacteria.In a state that does not allow bacteria to form endospores. The thicker walled endospores that can be survived. With boiled or heated or with chemicals, bacteria spores usual will not die but the dead spores can be carried by the wind everywhere. Thank you for reading this article.
Written and posted by Bambang Sunarno. sunarnobambang86@gmail.com
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name: Bambang Sunarno.
http://primadonablog.blogspot.com/2014/02/about-amoeba.html
DatePublished: February 22, 2014 at 19:02
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Tag ; About Amoeba, amoeba
