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10 Cards in this Set
- Front
- Back
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Bacterial Shape Coccus |
-Spherical Cells Monococcus -Singly Diplococcus -Pairs Streptococcus -Chains Staphylococcus -Clusters |
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Bacterial Shape Bacillus (plural=bacilli) |
-Rod-shaped, cylindrical cells Monobacillus -Singly Diplobacillus -Pairs Streptobacillus -Chains |
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Bacterial Shape Spirilus (plural=spirilla) |
-Helical, coiled cells -Usually occur singly -Often motile, capable of corkscrew like movement |
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Bacterial Structures Flagellum (flagella) |
-Motile species of bacilli and spirilla often one or more long, whip-like structures termed flagella which facilitate swimming movements -The flagella may emerge from a single end, from both ends (bipolar-flagella), or may extend from all sides of the cell (perltrichous flagella) |
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Bacterial Structures Pili |
-Some species of bacteria produce external hair-like appendages termed pili that are used for adhering to the substrate and can facilitate the exchange of genetic material during conjugation |
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Endospores |
Dormant Survival Structure
- Some species of bacteria produce internal thick-walled spores which are impervious to harsh environmental conditions - These endospores allow the bacterium to survive potentially long periods of desiccation, freezing, and/or boiling temperatures - Some endospores are thought to still be viable after hundreds of years, perhaps even thousands! |
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Phylum (Group):
Cyanobacteria Common Name: Blue-Green Algae |
("Blus-green algae"); aquatic cells that are often large, colonial and photosynthetic; gram (-)
Characteristics: - Large photosynthetic (green/blue reflecting pigments) cells- Often live in colonies (groups of cells) or filaments (chains of cells) - Occupy aquatic (marina or freshwater) or moist terrestrial habitats - Produce undigestible gelatinous capsules and food sources for heterotrophs |
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Phylum (Group):
Cyanobacteria |
Genera:
-Anabaena -Gloeocapsa -Nostoc -Oscillatoria |
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Phylum (Group):
Cyanobacteria Genus: Anabaena Akinetes Heterocyst |
-A filamentous aquatic species
-Strands of individual vegetative cells are housed in a gelatinous sheath -Heterocysts produce enzymes which are capable of fixing atmospheric nitrogen, and serve an important role in retailing nitrogen to aquatic ecosystems |
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Phylum (Group):
Cyanobacteria Genus: Anabaena Akinetes Heterocyst |
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