Term
| Microbial growth increases in size or number? |
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Definition
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Term
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Definition
cold loving grow in 0 degrees to 20 degrees Causes food spoilage |
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Term
Most bacteria grow where on the PH scale? |
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Definition
| somewhere from ph 6.5 - 7.5 |
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Term
| MOlds and yeast grow between ph: |
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Definition
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Term
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Definition
acid loving grow in acidic environment |
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Term
| Hypertonic environments increase salt or sugar causes: |
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Definition
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Term
| xtreme or obligate halophiles require what type of osmotic pressure? |
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Definition
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Term
What halophile can tolerate high osmotic pressure? |
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Definition
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Term
What are chemical requirements for growth? |
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Definition
Carbon Nitrogen Sulfur Phosphorus |
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Term
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Definition
| inorganic elements required in small amounts |
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Term
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Definition
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Term
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Definition
| It can tolerate growth on surface or on bottom |
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Term
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Definition
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Term
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Definition
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Term
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Definition
| alittle bit of oxygen is tolerated, grows in the middle |
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Term
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Definition
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Term
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Definition
| Nutrients prepared for microbial growth |
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Term
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Definition
| introducing a bacteria into a medium |
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Term
| What is a chemical defined media? |
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Definition
Exact chemical composition is knowned |
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Term
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Definition
| Extracts and digest of yeast, meats, plants |
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Term
| What are examples of complex medias? |
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Definition
Nutrient broth Nutrient agar |
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Term
| What is a reducing media? |
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Definition
| Contain chemicals that combine O2 and uses heat to drive off O2 |
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Term
| What is an anerobic chamber? |
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Definition
| A fully sterilized chamber for contagious or dangerous microbes |
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Term
A jar that doesn't allow any oxygen in and it holds petri dishes and releases carbondioxide and H2 |
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Definition
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Term
| Suppressing unwanted microbes and encouraging desired microbes |
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Definition
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Term
| Type of media that makes it easy to distinguish colonies of different microbes |
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Definition
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Term
| Type of media that encourages growth of desired microbe. |
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Definition
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Term
At what temperature is deep freezing |
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Definition
| -50 degrees to -90 degrees C |
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Term
What occurs in lyophilization (freeze-drying)? |
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Definition
| it is frozen to -54 degrees C and then dehydrated by a vacuum |
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Term
4 reproduction methods of prokaryotes |
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Definition
binary fission budding condiospores fragmentation of filaments |
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Term
| what are the 4 steps in binary fission? |
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Definition
1) duplication of DNA 2) DNA divides to 2 sides 3) the cell pinches into 2 4) the cell breaks into 2 |
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Term
What is the life log of cells dying? |
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Definition
Lag phase exponential growth phase stationary phase death phase
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Term
| Perform serial dilution of a sample |
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Definition
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