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Archaea Reproduction                               thought, for many years, no living
                                                                  thing could possibly live.  Their
               Archaea always reproduce                           homes are some of the most
               asexually.  They can produce using                 extreme places on the planet, and
               binary fission, like bacteria.  They               they have found a way to survive
               also can produce through a process                 there.
               known as budding.  In budding, a
               small appendage, or “bud” grows                    Thermophiles

               on top of the parent organism.
               Once this organism is fully                        “Therm” means heat.  (Think about
               developed, it breaks off and                       the words thermometer or
               becomes its own organism.                          thermostat.)  “Phile” refers to
                                                                  loving something, so archaea who
                                                                  are thermophiles love heat, and

                                                                  live in incredibly hot environments.
                                                                  You might think this would be an
                                                                  environment like the desert, but
                                                                  we’re actually talking about places
                                                                  like hot springs, geysers, and the
                                                                  areas near volcanoes, where the
                                                                  temperature gets close to 100
                                                                  degrees Celsius.  Just to give some

                                                                  perspective, the hottest
               Figure 14 – An organism undergoing                 temperature ever recorded was
               budding develops a “bud” which                     57.8 degrees Celsius, in El Azizia,
               eventually becomes its own organism.
                                                                  Libya in 1922.
               Archaea also reproduce through
               fragmentation, where pieces of the

               cell break off to form new cells.  In
               all these cases, the offspring has
               the same DNA as the parent,
               making it genetically identical.

               Where are Archaea Found?


               Perhaps the most amazing thing
               about archaea is where they are

               found.  Quite simply, archaea can                  Figure 15 – The hot springs in Yellowstone
                                                                  National Park were one of the first places
               be found in places that scientists                 archaea were discovered.



               © 2011 Supercharged Science                                      www.ScienceLearningSpace.com

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