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In Biology, an organism is any contiguous living system (such as animal, plant, fungus, or micro-organism). In at least some form, all organisms are capable of response to stimuli, reproduction, growth and development, and maintenance of homoeostasis as a stable whole. An organism may either be unicellular (single-celled) or be composed of, as in humans, many trillions of cells grouped into specialized tissues and organs. The term multicellular (many-celled) describes any organism made up of more than one cell.

The term "organism" (Greek ὀργανισμός - organismos, from Ancient Greek ὄργανον - organon "organ, instrument, tool") first appeared in the English language in 1701 and took on its current definition by 1834 (Oxford English Dictionary).

Scientific classification in biology considers organisms synonymous with "life on Earth". Based on cell type, organisms may be divided into the prokaryotic and eukaryotic groups. The prokaryotes represent two separate domains, the Bacteria and Archaea. Eukaryotic organisms, with a membrane-bounded cell nucleus, also contain organelles, namely mitochondria and (in plants) plastids, generally considered to be derived from endosymbiotic bacteria.[1] Fungi, animals and plants are examples of species that are eukaryotes.

More recently a clade, Neomura, has been proposed, which groups together the Archaea and Eukarya. Neomura is thought to have evolved from Bacteria, more specifically from Actinobacteria.[2]

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Q: What is it called When an organism consists of a single cell the organism?
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Related questions

When an organism consists of only one cell it is referred to as?

A single celled organism is called unicellular.


When can a single cell be called a organism?

I assume you meant single "celled" organism. It is an organism (life form) that consists of only a sigle cell as opposed to most all other lifeforms on earth which are comprised of many (billions) of cells.


A single cell organism is also called?

A single celled organism is called unicellular.


What is a living organism that consists of only one cell is called?

single celled organisms or microorganisms


What consists of one organism?

Most bacteria are single cell organisms.


Are individual cells in multi-cellular organisms considered to be alive?

We are multicellular. A multicellular organism contains more than one cell. A single-celled organism might be called 'unicellular'.


What is a multicellular orginisam?

Any (single) living organism that consists of more than a single cell.


Describes an organism that consists of a single cell?

A unicellular organism that has only one cell. One of the largest of these is called Valonia centricosa. Bacteria is also in this classification. They carry out life processes to survive.


What is an organism that consists of a single cell that does not have a nucleus or a membrane bound organelles?

paramecium


A organism such as bacterium that consists of a single cell with no nucleus is an?

An prokaryotic cell organism like bacteria answered by m.buallay


What does unicellular organism mean?

An organism (a living thing ... plant or animal) that consists of a single cell. Like an amoeba or a paramecium.


What unicellular organism mean?

An organism (a living thing ... plant or animal) that consists of a single cell. Like an amoeba or a paramecium.