Term
| Cycle of Sporulation and Germination |
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Definition
a vegetative cell's environment is unfavorable
sporulation
spore
germination
vegetative cell functions normally |
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Term
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Definition
| a compound found in spores that is the liely culprit for their resistant living structures |
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Term
| To destroy an endospore ... |
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Definition
autoclave
discontinuous sterilization |
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Term
| A spore is largely unaffected by ... |
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Definition
disinfectant/antiseptics
heat
radiation
drying
time |
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Term
| Endospore formation takes place after a cell has grown for some period as a .... cell and the cell has begun to run out of nutrient and build up wastes |
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Definition
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Term
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Definition
| 250 degree heat and 15 psi pressure |
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Term
| Discontinuous Sterilization |
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Definition
| boil... cool... boil... cool... boil... cool |
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Term
| Endospores are produced by two medically significant Genera... |
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Definition
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Term
| The endospore allows the bacterial cell to survive - but remain metabolically ... until environmental conditions improve to allow the organism to grow again |
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Definition
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Term
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Definition
| endospore formation (occurs within 6-8 hours) |
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Term
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Definition
| until favorable environmental conditions return, may stay in "spore" state for extended periods of time |
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Term
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Definition
| vegetative cell emerges from spore when conditions permit (2-3 hours) |
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Term
| Anthrax - organism, damage by, and introduced by |
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Definition
| Bacillus, toxins, skin and lungs |
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Term
| Botulism - organism, damage by, introduced by |
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Definition
| Clostridium, toxins, ingestion |
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Term
| Tetanus - organism, damage by, introduced by |
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Definition
| Clostridium, toxins, wound |
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Term
| Gas Gangrene - organism, damage by, introduced by |
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Definition
| Clostridium, toxins, necrotic |
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Term
| Method of bacterial reproduction is called... |
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Definition
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Term
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Definition
DNA replicates
bacterial cell elongates
"cross wall" forms
cytoplasm splits equally
each "new" cell has identical DNA
cells grow and divide again |
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Term
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Definition
| (also called doubling time) time it takes until new cells will divide again |
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Term
| What limits binary fisson? |
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Definition
lack of nutrients
lack of space
buildup of wastes |
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Term
| Bacterial Growth Curve phases |
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Definition
| lag. log, stationary, death |
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Term
| Lag Phase of the Bacterial Growth Curve |
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Definition
occurs during innoculation
cells become acclimated
very little cell division |
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Term
| Log Phase of the Bacterial Growth Curve |
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Definition
rapid cell division
cell numbers increase exponentially
symptoms of disease appear
ATBs are most effective
antiseptics/disinfectants most effective |
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Term
| Stationary Phase of the Bacterial Growth Curve |
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Definition
also called the equilibrium phase
balance between growth of new cells and death of old cells
nutrients begin to be depleted
waste builds up
spores may begin to form |
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Term
| Decline Phase of Bacterial Growth Curve |
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Definition
also called the death phase
death rate is much faster than fission rate
colony population begins to die out
disease begin to resolve themselves
some cells live longer is they form spores or possess flagella |
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Term
| Equation for the Bacterial Growth Curve |
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Definition
Bf = Bi x 2n
Bf = final number of bacteria
Bi = initial population of bacteria
n = number of generations |
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