Home Forum Dictionary Articles Tutorials Books Directory Share your work


Edit page | Page history | Printable version

Dictionary » A » Archaebacteria

Archaebacteria

Definition

noun, singular: archaebacterium

Unicellular microorganisms in the domain Archaea, which is genetically distinct from bacteria and eukaryotes, and often inhabiting extreme environmental conditions.


Supplement

Examples of archaebacteria include halophiles (microorganisms that may inhabit extremely salty environments), methanogens (microorganisms that produce methane), and thermophiles (microorganisms that can thrive extremely hot environments).

They evolved separately from eubacteria and eukaryotes. They are similar with eubacteria in being prokaryotes and lacking distinct cell nucleus. They differ in terms of ribosomal structure, the possession of introns and in membrane structure or composition. They are similar to eukaryotes in ways that archaea possess genes and several metabolic pathways that are more closely related to those of eukaryotes: notably the enzymes involved in transcription and translation.


Word origin: New Latin, from Greek arkhaion, neuter singular of arkhaios, ancient + bacteria.

Related forms: archaeobacteria.

Synonym: archaea.
Compare: eubacteria.


Please contribute to this project, if you have more information about this term feel free to edit this page



Results from our forum


Re: The Colin Leslie Dean species paradox

... enough to spamquote wikipedias list of) a species is MUCH more defineable. So, just because the same definition of species does not apply to both archaebacteria and mammals DOES NOT mean that there is no such thing as species in either lineage. those problems mean your clasifficatory system species ...

See entire post
by AstusAleator
Mon Jul 20, 2009 10:04 pm
 
Forum: Evolution
Topic: The Colin Leslie Dean species paradox
Replies: 120
Views: 2138

Re: plasmid

If I recall correctly, archaebacteria are commonly used. The reasoning, I believe, is that they are found in harsh conditions (volcanoes, etc.) and thus denature with greater difficulty. -U

See entire post
by supaumar
Fri Apr 03, 2009 12:45 am
 
Forum: General Discussion
Topic: plasmid
Replies: 2
Views: 387

Re: Do all cells have the ability to perform photosynthesis?

No. Only plants, some algae, some plankton (not sure where they are classified), and a very few archaebacteria (I think) can do photosynthesis. We lack the light harvesting centers and the enzymes like Rubisco that fix carbon dioxide.

See entire post
by blcr11
Fri May 16, 2008 6:16 pm
 
Forum: Cell Biology
Topic: Do all cells have the ability to perform photosynthesis?
Replies: 11
Views: 3463

Motility

... is motile. You are right about flagella. For the domain question, you will need to decide whether your baceria (2 on the list) belong to Archaea (archaebacteria) or Bacteria (eubacteria). Good luck.

See entire post
by Cat
Sun Feb 24, 2008 10:05 pm
 
Forum: Microbiology
Topic: Motility
Replies: 3
Views: 1035

I need your help guys!! Tell me how I did on my Bio test->

... of the following except A.)complexity B.)death C.)multicellularity D.)sensitivity E.)inheritance 10.The kingdom not containing eukaryotes is A.)archaebacteria B.)fungi A???? Thanks ! I really really appreciate your help :D

See entire post
by kid5er
Fri Sep 29, 2006 10:31 pm
 
Forum: General Discussion
Topic: I need your help guys!! Tell me how I did on my Bio test->
Replies: 13
Views: 1657
View all matching forum results

This page was last modified 09:50, 19 July 2008. This page has been accessed 11,879 times. 
What links here | Related changes | Permanent link