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Key Terms
Anaerobic
Chemotrophs
Anoxygenic Phototrophs
Aerobic Chemoorganotrophs
Random
100
Photosynthetic organisms that do not produce 02
Anoxygenic Phototrophs
100
For the first 1.5 billion years that prokaryotes inhabited the earth the atmosphere was _______.
Anoxic
100
What is a gram-negative organism that appears red, orange, or purple due to their light-harvesting pigments.
Purple Bacteria
100
This particular species are a related group of bacteria common in soil. In addition to mycobacterium they are also acid fast
Nocardia Species
100
Which type of species are unique in their extraordinary resistance to the damaging effects of gamma radiation
Deinococcus Species
200
What are Organisms that harvest energy by oxidizing inorganic chemicals
Chemolithotrophs
200
Give two examples of anaerobic microenvironments
*Skin *Oral Cavity *Intestinal Tract
200
The accessory pigments of the green sulfur bacteria are located in what structures?
Chlorosomes
200
______Oxidize organic compounds to obtain energy using O2 as a terminal electron acceptor
Aerobic Chemoorganotrophs
200
Enteric bacteria that characteristically ferment lactose are are included in what group?
Coliform Pg 266
300
What are Gram-negative bacteria that congregate to form complex structures called fruiting bodies.
Myxobacteria
300
What is the organism that is very sensitive to O2 & are commonly found in sewage, swamps, digestive tracts, and marine sediments
Methanogens
300
What is the type of bacteria that form multicellular arrangements and exhibit gliding motility
Filamentous Anoxygenic Phototrophic Bacteria
300
These particular species are widespread in nature and include harmless saprophyte, which live on dead and decaying matter, as well as pathogens.
Mycobacterium Species
300
What are the enterics that are part of the normal intestinal microbiota?
*Enterobacter *Klebsiella *Proteus
400
What are Archaea that obtain energy by oxidizing hydrogen gas, using CO2 as a terminal electron acceptors, thereby generating methane.
Methanogens
400
What is the compound responsible for a rotten egg smell in many anaerobic environments
Hydrogen sulfide
400
What is an important characteristic that distinguishes purple non-sulfur bacteria from purple sulfur bacteria?
An important characteristic that distinguishes purple non-sulfur bacteria from purple sulfur bacteria is that: *They preferentially use a variety of organic molecules rather than hydrogen sulfide as a source of electrons for reducing power. *In addition Purple non sulfur bacteria lack gas vesicles.
400
This particular species are gram-negative rods that have polar flagella and often produce pigments.
Pseudomonas Species
400
What is the organism that is the causative agent of Hansen's disease?
Mycobacterium Leprae
500
What are Long helical bacteria that have flexible cell walls and endoflagella
Spirochetes
500
Vegetative cells that develop from Endospores are responsible for what type of diseases. Name two.
Tetanus --> caused by C.tetani Gas Gangrene --> caused by C Perfringens Botulism --> caused by C.Botulism
500
What are the representative genera of green bacteria
Chlorobium and Pelodictyon
500
Medically this is the most significant species. It is a common opportunistic pathogen, meaning that it primarily infects people who have underlying medical conditions.
P. Aeruginosa
500
What are the two organisms that are acid-fast?
Nocardia and Mycobacterium