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Bacteria - Bacteria Click to edit Master subtitle style...

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Click to edit Master subtitle style Bacteria
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Classifying Bacteria into TWO Kingdoms 1. Divided into 2 kingdoms: (Were once one kingdom- Monera ”, before DNA sequences were found to be too different.) a. Kingdom Eubacteria modern bacteria that make up most of what we consider to be bacteria. Live almost anywhere & have cell walls made of peptidoglycan (protein/carbohydrate) . E-coli   bacteria  (yellow) on the  head of a needle. Slide # 7
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b. Kingdom Archaebacteria Ancient bacteria thought to be the ancestor of eukaryotes (all other kingdoms). cell walls do not have peptidioglycan They live only in extreme environments: Hot- Yellowstone’s many hot springs Salty- The Dead Sea No oxygen- Swamps & deep in soil Ex: Thermaphiles in hot springs Halophiles in salty habitats Slide # 8
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Colonies of halophiles form a purple-red scum in these salt collection ponds of the Dead Sea Colorful thermophiles grow in this hot spring. Grand Prismatic Spring , Yellowstone National Park , Wyoming Adam Jones Kingdom Archaebacteria H O T Sal ty Slide # 9
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Structure of Bacterial Cells Bacteria are prokaryotes Have no membrane bound organelles Inherited information is held in a single, circular chromosome , rather than in paired chromosomes Bacteria are unicellular (one-celled living organisms) Bacteria contain a cell wall
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Structure of Bacterial Cells Some bacteria contain pili extensions of the plasma membrane help bacteria stick to surfaces Bacteria contain flagella enable bacterial cells to move Some bacteria contain capsules prevent bacteria from
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( 1)type of cell wall (2)how they use energy (3)shape (4)if they are found in groups How are bacteria
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