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23 Cards in this Set

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obligates aerobes
organisms that can only survive in an environment containing oxygen. Some organisms are facultative aerobes, which can take advantage of either oxygenated environments or use a different set of metabolic reactions and survive in the absence of oxygen
faculative anaerobes
Most important heterogenous collection of medically significant bacteria (27genera & 110 sp)
Ubiquitous- soil, water, vegetation (saprophytes) & some normal flora of humans & animals but opportunistic (E.coli, Klebsiella pneumoniae, Proteus mirabilis) and some always pathogenic (Salmonella, Shigella & Yersinia pestis).
obligate anaerobes
Anaerobic habitats with high organic matter & sulfates (polluted lakes, sewagw digestors, rumen, intestine); physiological types psychrophilic, thermophilic, mesophilic, thermophilic & halophilis.
a protein complex in the membrane of halobacteria that conducts a unique form of photosynthesis, employing the light-sensitive pigment retinal rather than the chlorophyll used by all other known photosynthetic organisms.
Any of various slender, spiral, motile bacteria of the order Spirochaetales, many of which are pathogenic, causing syphilis, relapsing fever, yaws, and other diseases.
cyanobacteria (autotroouph)
a widely distributed group of predominantly photosynthetic prokaryotic organisms of the subkingdom Cyanophyta, resembling phototrophic bacteria, occurring singly or in colonies in diverse habitats: some species can fix atmospheric nitrogen.
blue-green algae
An organism adapted to living in conditions of extreme temperature, pressure, or chemical concentration, as in highly acidic or salty environments.
Requiring high temperatures for normal development, as certain bacteria.
An organism that requires a salty environment
Any of various archaea that are capable of producing methane from the decomposition of organic material
Unicellular or multicellular photosynthetic eukaryotes that generally lack roots, stems, leaves, conducting vessels, and complex sex organs.
Any of numerous minute, chiefly marine protozoans of the order Dinoflagellata, characteristically having two flagella and a cellulose covering and forming one of the chief constituents of plankton. They include bioluminescent forms and forms that produce red tide.
Any of various protozoans of the class Ciliata, characterized by numerous cilia.
Any of various microscopic protists of the phylum Bacillariophyta that live in both fresh and marine water, have hard bivalve shells (called frustules) composed mostly of silica, and often live in colonies. Most diatoms can perform photosynthesis. They make up a large portion of the marine plankton and are an important food source for many aquatic animals. The skeletal remains of diatoms are the main constituent of diatomite.
chitin cell wall
a nitrogen-containing polysaccharide, related chemically to cellulose, that forms a semitransparent horny substance and is a principal constituent of the exoskeleton, or outer covering, of insects, crustaceans, and arachnids.
an animal phylum comprising the sponges
An animal body form in which only one plane divides the animal into mirror image halves
gastrovasacular cavity
Gastrovascular cavities, as the name suggests, function in both digestion and the transport of nutrients to all parts of the body. Organisms belonging to two major phyla, the Cnidaria and the Platyhelminthes, characteristically possess gastrovasular cavities.
having no back bone
having a back bone
a taxonomic kingdom of prokaryotic organisms that typically reproduce by asexual budding or fission and have a nutritional mode of absorption, photosynthesis, or chemosynthesis, comprising the bacteria, blue-green algae, and various primitive pathogens.
A unicellular protoctist in taxonomic systems in which the protoctists are considered to form a kingdom
a taxonomic kingdom, or in some classification schemes a division of the kingdom Plantae, comprising all the fungus groups and sometimes also the slime molds.