Chapter 4 Slide

Chapter 4 Slide - BIO 205 Chapter 4 The Domain Bacteria...

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BIO 205 Chapter 4
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Chlamydiae are extremely small, mostly pathogenic bacteria Cyanobacteria carry out photosynthesis using chlorophyll, responsible for the appearance of oxygen in Earth’s early atmosphere Actinobacteria include Streptomyces , the genus that produces the antibiotic streptomycin Firmucutes consist of many gram-positive species, such as Bacillus , Clostridium , Staphylococcus , and Streptococcus Proteobacteria contain the largest and most diverse group of species, including E. coli and many human pathogens The majority of the 18 phyla of Bacteria play a positive role in nature The Domain Bacteria Contains Some of the Best Studied Prokaryotes
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Thermoacidophiles (grow at high temperature with low pH Extreme halophiles (salt lovers) Methanogens (live in anoxic environments) Euryarchaeota contain: The Domain Archaea Contains Many Extremophiles Crenarchaeota tend to grow in hot acidic environments such as hot springs and volcanic vents
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The Shapes and Arrangements of Prokaryotic Cells Three Main Shapes: Rod Sphere Spiral
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The Shapes and Arrangements of Prokaryotic Cells
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Streptococcus Chain
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Many cocci and some bacilli appear in groups or chains A spherical bacterial cell is a coccus
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Spiral shaped bacteria can appear as vibrios (comma- shaped), spirilla (helical), or spirochete
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Prokaryotic Cell Structure
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Pili Pili help: Pili
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Chapter 4 Slide - BIO 205 Chapter 4 The Domain Bacteria...

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