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31 Cards in this Set
- Front
- Back
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Psychrophiles
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10°C to 25°C
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Psychrotrophes
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0°C to 30°C
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Mesophiles
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10°C to 45°C
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Thermophiles
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30°C to 80°C
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Facultative halophiles
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tolerate high osmotic pressures
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Halophilic
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tolerates an increased salt concentration
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Extreme or Obligate halophile
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requires a high salt concentration
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Define the term water activity?
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a measure of water available for use by an organism
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Aerobic bacteria
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grows best in the presence of oxygen
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Anaerobic bacteria
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grows best in the absence of oxygen
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Facultative anaerobes
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bacteria that grown in the presence or absence of oxygen
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Capnophilic bacteria
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grow best in increased concentrations of carbon dioxide
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Obligate anaerobes
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are killed by any exposure to oxygen
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Aerotolerant anaerobes
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may survive some exposure to oxygen
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Define "Metabolism"
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The sum total of chemical reaction inside of a cell
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Define "Catabolism"
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is breaking down complex chemicals into simpler ones
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Define "Exergonic
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releases energy
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Define "Anabolsim"
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is the building up of chemicals (simpler to more complex)
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Define "Endergonic"
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requires energy to take place
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Ribosomes are made of _______________
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RNA
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Enzymes are made of ________________
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Proteins
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Important Coenzymes are? or carry elections?
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NADP, NAD, FAD
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Lactic acid is reduced to turn into ____________
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pyruvic acid
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Define "Complex medium or undefined medium"
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Components are chemically undefined
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Define "Chemically defined"
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exact composition is known
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Why grow microorgansims in the laboratory?
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To carry out detail studies of their activities
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Define "Special purpose media"
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Used to enrich growth of microorganisms or to isolate a particular type of microorganism
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Define "Enrichment media or Isolation media"
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consists of components very favourable for he organism
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Explain the term "Active transport"
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- it involves the use of permeases
- requires ATP - results in greater nutrients inside the cell than outside the cell |
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Explain he term "Group translocation"
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- Nutrients are chemically modified during movement across the membrane
- Requires a different carrier protien |
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Explain the term "Facilitated diffusion"
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- Nutrients bind first with permeases
- Does not require energy - Does not result in greater nutrients inside the cell than outside the cell |
