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Micro Bio Chapter 11

Microbiology Chapter 11 Key Terms

QuestionAnswer
Anoxygenic Phototrophs Photosynthetic organisms that do not produce O2
Chemolithotroph An organism that harvests energy by oxidizing inorganic chemicals.
Chemoorganotroph An organism that harvests energy by oxidizing organic chemicals.
Chemotroph An organism that harvests energy by oxidizing chemicals
Cyanobacteria Gram-negative oxygenic phototrophs; geneically related to chloroplasts.
Lactic acid bacteria Gram-positive bacteria that generate lactic acid as a major end product of their fermentative metabolism.
Methanogens Archaea that obtain energy by oxidizing hydrogen gas, using COx as a terminal electron acceptor, thereby generating methane.
Myxobacteria Gram-negative bacteria that congregate to form complex structures called fruiting bodies.
Nitrifiers Gram-negative bacteria that obtain energy by oxidizing inorganic nitrogen compounds such as ammonia or nitrate.
Oxygenic Phototrophs Photosynthetic organisms that produce O2
Prosthecate Bacteria Gram-negative bacteria that have extensions projecting from the cells thereby increasing their surface area.
Spirochetes Long helical bacteria that have flexible cell walls and axial filaments.
Sulfur-Oxidizing Bacteria Gram-negative bacteria that obtain energy by oxidizing elemental sulfur and reduced sulfur compounds, thereby generating sulfuric acid.
Created by: dora2002
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