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Classification of organisms

AB
General characteristics used to classify organisms into kingdomsUnicellular or multicellular; heterotroph or autotroph; prokaryotic or eukaryotic; sexual or asexual reproduction
UnicellularAn organism composed of only one cell
MulticellularAn organism composed of many cells
Sexual reproduction2 parents; offspring receive 50% of the DNA from each parent; slow reproduction rate
Asexual reproduction1 parent; offspring receive 100% of the parent's DNA; fast reproduction rate
AutotrophAn organism that can manufacture its own food
HeterotrophAn organism that has to get its food (cannot manufacture its food)
PhotosynthesisThe process by which the energy from the sun is used by an organism to make chemical energy (sugar).
ChemosythesisThe process by which organic compounds (sugars) are made using the chemical reactions from the Earth; typically takes place near hydrothermal vents
Prokaryotic cellCell without a nucleus; primitive cell
Eukaryotic cellCell with a nucleus; DNA is contained within the nucleus; more advanced
EubacteriaProkaryotic; unicellular; can be autotrophs or heterotrophs; most common bacteria; found everywhere
ArchaebacteriaUnicellular; prokaryotic; found in extreme environments
ProtistaCannot be classified as an animal plant or fungus; Eukaryotic; autotroph and heterotroph; ex. Slime mold; protozoa; primitive algae
FungiMulticellular; Eukaryotic; heterotroph; ex. Yeast, mushrooms, ringworm
PlantaeMulticellular; Eukaryotic; autotroph; provides food for heterotrophs
AnimaliaMulticellular; eukaryotic; live everywhere; heterotrophs.
RegenerationA special form of asexual reproduction where the organism can replace a lost part or produce an entirely new organism from the lost part.
BuddingA form of asexual reproduction where a new organism develops from an outgrowth on the parent and then separates after it is mature.
Cell divisionA form of asexual reproduction where a cell grows and divides forming two daughter cells that are identical to the parent cell.


8th Grade Science Teacher
St. Louis School Hawaii
Honolulu, HI

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