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BJU Life Science 9

Bob Jones Life Science - Chapter 9

bacteria (bacterium sing) A microscopic, unicellular, prokaryotic organism in kingdom Eubacteria or Archaebacteria.
kingdom Archaebacteria Microscopic organisms that are prokaryotic, live in extreme environments, and lack some compounds found in the cell walls of eubacteria.
kingdom Eubacteria Microscopic organisms that are also prokaryotic. Many are disease-causing, and are responsible for decomposing most organic matter. This is the kingdom that people think of when they hear the term bacteria.
binary fission A method of asexual reproduction seen in bacteria in which the genetic material is replicated and the cell splits in two.
virus A nonliving structure, made of a strand of DNA or RNA and surrounded by a protein coat, that replicates itself inside host cells
kingdom Protista Very diverse kingdom with species that can move, obtain food, and reproduce. They are all eukaryotic. Most are unicellular, but some form colonies and a few are multicellular. Contains 2 general types of organisms - protozoans and algae.
protozoan An animal-like organism in the kingdom Protista that usually can move and does not perform photosynthesis
conjugation A type of sexual reproduction in many unicellular and colonial organisms for the purpose of exchanging portions of their genetic material
algae The plantlike organisms in kingdom Protista that can perform photosynthesis and are usually unable to move themselves.
fragmentation A type of asexual reproduction cause by a physical disturbance that breaks a colonial organism; observed in algae.
plankton Microscopic organisms, primarily protozoans and algae, that float near the ocean's surface and are a key food source in the ocean's food chain.
kingdom Fungi Kingdom which includes yeast, molds, smuts, mushrooms, and toadstools. They all have spores and most fungal cells are long filaments called hyphae.
hyphae (sing. hypha) The slender filaments of a fungus that secrete enzymes for use in external digestion.
lichen A fungus and an algae that live together symbiotically for mutual benefit and appear as a single organism.
symbiotic A close, long-term relationship between two species.
Created by: heidio