Transcript Archaebacteria - HRSBSTAFF Home Page

Archaebacteria
Cameron Gordon, Daniel Power &
Garrison Seto
What is Archaebacteria?

Archaebacteria are the oldest living
organisms on earth. They are
prokaryotes and unicellular.
Archaebacteria are found in very harsh
conditions. Methanogens, halophiles,
thermoacidophiles are phyla of
atchaebacteria.
Phylum



Thermophiles are the heat-loving bacteria
found near hydrothermal vents and hot
springs.
The methanogens are anaerobic bacteria
that produce methane. They are found in
sewage treatment plants, bogs, and the
intestinal tracts of ruminants.
Halophiles are bacteria that thrive in high
salt concentrations such as those found in
salt lakes or pools of sea water.
Anatomy

Archaebacteria are prokaryotic cells,
that means that they do not have any
membrane bound organelles and they
do not have a true nucleus, although
they do have a nuclear region.
Archaebacteria have cell walls for
structure and flagella for movement.
Locomotion

Methanogens, halophiles &
thermoacidophiles all move around the
same way, they use their flagella like a
rotating motor to help them propel
themselves where they need to go
whether to get food or get away from
a toxin.
Mathanogens
Obtaining Food

There are three phyla, or groups, of
archaebacteria. The methanogens are
characterized by their ability to harvest
energy by converting H2 and CO2 into
methane gas. They are often found in
the stomachs of cows.
Halophiles
Obtaining Food

The second phylum is the halophiles.
These organisms are salt-loving.
Though salt kills most bacteria, it
helps the extreme halophiles to thrive.
They are found in the Dead Sea, the
Great Salt Lake, and other areas with
a high salt content.
Thermoacidophiles
Obtaining Food

The third phylum is the
thermoacidophiles. These bacteria are
found in extremely acidic conditions
and in areas with very high
temperatures. They can survive in
volcanic vents and hydrothermal vents
(cracks in the ocean floor where
scalding water leaks out).
What do Archaebacteria
Eat?

Archaebacteria don’t actually eat
anything. This is because
archaebacteria are considered to be
chemosynthetic organisms. Being a
chemosynthetic organism means that
they get their nutrients and energy
from absorbing certain chemicals.
Digestion

Archaebacteria digest their food through
endocytosis which is extracellular and
nutrients are absorbed into the cell directly
through the membrane.
Excretion

Archaebacteria excrete waste through
diffusion. They release waste particles
through their cell membrane as a
liquid or a gas, methanogens produce
methane gas as waste product.
Circulation

Archaebacteria do not have or need a
circulatory system because they are
single celled organisms and they can
get nutrients directly through the cell
membrane.
Respiration

Like humans, bacteria need to breathe. In
some cases, bacteria use oxygen to breathe,
as humans do. In other situations, bacteria
use different types of respiration, the two
types are aerobic and anaerobic respiration.
Aerobic respiration requires oxygen and is
efficient. Anaerobic respiration do not
require any oxygen but isn’t very efficient.
Life Cycle

Archaebacteria
reproduce
asexually and
undergo binary
fission to create
new cells.
Video
http://www.yout
ube.com/watch?
v=ZskEUGRlqrI
Bibliography










http://science.jrank.org/pages/474/Archaebacteria-Generalcharacteristics.html
http://www.buzzle.com/articles/monera-characteristics.html
http://zipcodezoo.com/Key/Archaea/Archaea_Kingdom.asp
http://www.encyclopedia.com/topic/Archaebacteria.aspx
http://www.blurtit.com/q4989881.html
http://www.angelfire.com/ks3/aszalawiga/archaebacteria.html
http://answers.encyclopedia.com/question/three-typesarchaebacteria-80207.html
http://library.thinkquest.org/28751/review/5kingdom/2.html
http://www.livestrong.com/article/146498-what-is-bacterialrespiration/#ixzz1JYJA8BwP
http://www.stormingmedia.us/99/9930/A993012.html