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Photosynthesis that does not oxidize water to produce oxygen; a form of photosynthesis characteristic of purple and green photosynthetic bacteria and heliobacteria
Axial fibrils or periplasmic flagella
The flagella that lie under the outer sheath and extend from both ends of the spirochete cell to overlap in the middle and form the axial filament
Polyhedral inclusions that contain the carbon dioxide-fixation enzyme rubisco; found in cyanobacteria, nitrifying bacteria, and thiobacilli
Elongated, intramembranous vesicles found in green sulfur and nonsulfur bacteria; contain light-harvesting pigments; sometimes called chlorobium vesicles
A large group of gram-negative bacteria that carry out oxygenic photosynthesis using a system like that present in photosynthetic eukaryotes
Elementary body (EB)
A small, dormant body that serves as the agent of transmission between host cells in the chlamydial life cycle
Green nonsulfur bacteria
Anoxygenic photosynthetic bacteria that contain bacteriochlorophylls a and c; usually photoheterotrophic and display gliding motility; include members of the phylum Chloroflexi
Green sulfur bacteria
Anoxygenic photosynthetic bacteria that conatin bacteriochlorophylls a plus c, d, or e; photolithoautotrophic; use hydrogen gas, hydrogen sulfide, or sulfur as electron donor; include members of the phylum Chlorobi
Photosynthesis that oxidizes water to form oxygen; the form of photosynthesis characteristic of plants, protists, and cyanobacteria
The ability of certain phototrophic microbes to move, either by gliding or swimming motility, in response to a light source
Particles on the membranes of cyanobacteria that contain photosynthetic pigments and electron transport chains
Reticulate body (RB)
The cellular form in the chlamydial life cycle whose role is growth and reproduction within the host cell
Are members of the phylum Aquificae autotrophic, heterotrophic, chemotrophic, lithotrophic, phototrophic, organotrophic, or a combination?
Are members of the phylum Thermotogae autotrophic, heterotrophic, chemotrophic, lithotrophic, phototrophic, organotrophic, or a combination?
Spherical or rod-shaped, often associated in pairs or tetrads
What shape are members of the genus Deinococcus?
What acid do members of the genus Deinococcus have in their plasma membrane instead of teichoic acid?
Two circular chromosomes, a mega plasmid, and a small plasmid
What does the genome of members of the genus Deinococcus consist of?
In the genus Deinococcus, accumulation of what ion protects against radiation-induced toxic oxygen species?
Purple sulfur bacteria
Which bacteria uses reduced sulfur compounds as electron sources and accumulates sulfur granules within their cells?
Green sulfur bacteria
Which bacteria uses reduced sulfur compounds as electron sources and accumulates sulfur granules outside their cells?
Purple nonsulfur bacteria
Which bacteria uses organic molecules rather than sulfur or water as electron sources for photosynthesis?
Purple sulfur bacteria and purple nonsulfur bacteria
What type of bacteria does the phylum Proteobacteria contain?
Photosynthetic pigments in green sulfur bacteria are located in what ellipsoidal vesicles?
All of these
Do cyanobacteria reproduce by binary fission, budding, fragmentation, or multiple fission?
Cyanobacteria; unicellular rods or cocci; most are nonmotile; reproduce by binary fission or budding
Cyanobacteria; unicellular, though some may be held together in an aggregate by an outer wall; reproduce by multiple fission to form baeocytes
Spherical or oval, budding bacteria that lack peptidoglycan and have distinctive crateriform structures in their cell walls
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