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Organisms

Definition

noun, singular: organism

Living things that are capable of reacting to stimuli, reproduction, growth, and homeostasis.


Supplement

Plants, animals, fungi and microorganisms are examples of organisms. They all consist of monomeric units called cells. Some organisms may function independently or singly (unicellular) whereas others may form many units (multicellular) divided into specialized tissues and organs. Based on cell type, organisms may be divided into prokaryotes and eukaryotes.


Word origin: Greek - organismos, from Ancient Greek organon , meaning "organ, instrument, tool".
Related forms: organismal (adjective), organismic (adjective), organismically (adverb)
See also: superorganism, microorganism.


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Re:

Jackbean: I would appreciate if you could explain our adaptation to the environment. The current organisms are adapted to the enviroment, where they live, no matter, whether you think they evolved into such adaptation or whether they were created, right? Think about the ...

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by JackBean
Sun Oct 09, 2011 2:37 pm
 
Forum: Evolution
Topic: The Implausible Engines of Evolution
Replies: 7
Views: 98

Flaws of Life in a Tube

... And what about all that bacteria that are strictly anaerobic and cannot survive in presence of oxygen? And survival (or lack thereof) of complex organisms in tar is not related to the survival of prokaryotes in the same environment. Bacteria can survive in tar, use it, degrade it (albeit slowly) ...

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by canalon
Sun Oct 09, 2011 4:23 am
 
Forum: Evolution
Topic: Flaws of Life in a Tube
Replies: 5
Views: 72

Re: Digestive System Evolution

... Lysosomes and Peroxisomes. Evolutionary theory in whatever form, cannot explain how this “chicken and egg” situation can come about. Yet living organisms are replete with these types of systems. Purposeful design is a perfectly valid scientific concept and only purposeful design can explain ...

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by scottie
Sat Oct 08, 2011 12:58 pm
 
Forum: Evolution
Topic: Digestive System Evolution
Replies: 19
Views: 11529

Re:

... Also, a bad mutation turning out to be good is rare and hardly observed in the natural world, especially when it comes to multi-cellular organisms. Also, keep in mind that most mutations are lethal, and thus they do not continue. The probability of a mutation being positive is also extremely ...

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by JackBean
Sat Oct 08, 2011 9:57 am
 
Forum: Evolution
Topic: The Implausible Engines of Evolution
Replies: 7
Views: 98

The Implausible Engines of Evolution

... Also, a bad mutation turning out to be good is rare and hardly observed in the natural world, especially when it comes to multi-cellular organisms. Also, keep in mind that most mutations are lethal, and thus they do not continue. The probability of a mutation being positive is also extremely ...

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by Tomn
Fri Oct 07, 2011 9:27 pm
 
Forum: Evolution
Topic: The Implausible Engines of Evolution
Replies: 7
Views: 98
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