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Cards In This Set
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Bacteria are subject to their environment, which 2 Genera have found a way to protect themselves?
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Bacillus (Aerobe)
Clostridium (Anaerobe) Both are vegetative cells (actively metabolizing, they begin the process of sporulation and eventually form Endospores |
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What is an Endospore?
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A survival structure formed within the bacterial cell that allows the cell to survive until environmental conditions improve
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What does an Endospore contain?
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Copy of the organisms chromosome, a little cytoplasm and a small amount of cell machinery.
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What does the Spore coat contain?
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Keratin, Protein, Calcium, dipicolinic acid adn peptidoglycan
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What are vegetative cells stressed by?
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Nutrient limitation, temperature changes, waste accumulation, all these things begin the process of sporulation
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What does Sporulation begin with?
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Replication of the bacterial chromosome and the spatial separation of the chromosomes in different regions within the cell's cytoplasm
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What is separation of the chromosomes's accomplished by?
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The formation of a wall or septum within the cell
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Name the 2 regions of the Septum
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Forespore-will eventually become the Endospore
Sporangium-Metabolically active and produces and deposits the compounds necessary for the completion of the spore coat layers |
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An Endospore that develops at the end of a cell is called what?
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Terminal Endospore
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An Endospore that develops in the middle a cell is called what?
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Central Endospore
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An Endospore that develops between the center and the end of a cell is called what?
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Subterminal Endospores
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When the Endospore matures and dies over time, the cell wall breaks down releasing the Endospore, what it it called now?
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Just a Spore or a Free Spore
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What is environmentally resistant and very difficult to destroy?
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Endospore
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What 4 things do Endospores resist?
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Heat, Radiation, Dessication and Chemicals, all these properties make it difficult to stain
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The properties of Endospores make it easy to use them for what?
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Biological weapons like Anthrax
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