Flashcard Set Preview
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| 1 |
what is symbiosis
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when two species have an extended and intimate association
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symbionts
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the participating organisms in symbiosis
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host
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the larger of the two species in symbiosis
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microsymbiont
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the smaller of two species in symbiosis
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mutualismparasitismcommensalismopportunistic infection
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when both organisms benefit from the symbiotic relationship when one organism benefits...
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rhizobium
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the type of bacteria that colonizes in the roots of plants and fixes nitrogen for the plant...
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what kind of prokaryotes produce endotoxins and exotoxins and what are endo/exotoxins
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parasites. exotoxins - toxins secreted by the prokaryote.endotoxins - surface
protein components...
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what about cholera kills people
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the exotoxin that the bacteria produces
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| 9 |
what is osmosis
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the net movement of water accross a selectively permeable membrane from low solute concentration...
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| 10 |
what is vibrio cholera
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bacteria that colinizes the intestines. it produces an exotoxin that stimulates a massive...
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| 11 |
what type of nitrogen is it changed from/to by nitrogen fixing bacteria
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from N2 to ammonia (NH3)
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| 12 |
what are saprobes
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organisms that live on dead and decaying matter. they obtain nitrogen in its biological form...
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| 13 |
what type of plant generally houses nitrogen fixers
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legumes
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| 14 |
how do plants attracts N fixin bacteria
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plants secrete flavanoids which turn on genes in N fixing bacteria to come to the plant
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what is anabaena
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blue/green algae. a genus of cyanobacteria. colonizes on the leaves of aquatic ferns and fix...
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