web view3/4/2017 · the domains/kingdoms. definitions: autotroph - organism capable of...
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The Domains/Kingdoms
Definitions:Autotroph - organism capable of obtaining energy from
the physical environment (sunlight or thermal
vents)Heterotroph- organism capable of obtaining food and
energy from eating autotrophs or other heterotrophs.
Prokaryote - single celled organisms without a true nucleus
Eukaryote - organisms (unicellular and multi-cellular) whose
cells contain a membrane bound nucleus.
The Kingdoms/domains:Domains- The first two contain prokaryotes that are unicellular 1.Eubacteria – called eubacteria in your text - Prokaryotic and unicellular
- they have a cell wall and one or two cell membranes
Examples: cyanobacteria, soil dwelling bacteria, disease causing bacteria
2.Archaea –called archaebacteria in your text - prokaryotic and unicellular - Lack an important carbohydrate found in the cell wall of other bacteria and they have different lipids in their cell membranes.
- Includes bacteria that live in extremely harsh environmentsExample: methanogens, halophiles
3. Eukaryota: -contain organisms with eukaryotic cells - can be divided into 4 kingdoms
A.Protista - mostly single-celled (some multi-cellular) eukaryotes; have cell walls; autotrophic or heterotrophic; reproduce sexually and asexually; live in mostly moist aquatic habitatsExamples: plankton
B.Fungi - mostly multi-cellular; eukaryotic; heterotrophic; contain cell walls; reproduce sexually or asexually; mostly terrestrialExamples: mushrooms, yeasts, molds
C. Plantae - multi-cellular; eukaryotic; autotrophic; contain cell walls; reproduce sexually or
asexually; live in both terrestrial and aquatic environmentsExamples: seaweed, conifers, flowering plants
D. Animalia - multi-cellular; eukaryotic; lack cell walls; heterotrophic; reproduce mostly sexually; live both in terrestrial and aquatic habitats.Example: sponges, insects, vertebrates