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chapter 7
chapter 7
18
Microbiology
Undergraduate 3
02/08/2012

Additional Microbiology Flashcards

 


 

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Term
moderate halophile
Definition
require 0.2M to 3.4M NaCl
Term
Extreme Halophile
Definition

Require 2.0-6.2M NaCl for enzyme, protein, and ribosome stability. 

 

Found in Hypersaline environments.

Term
 osmotolerant
Definition

Grow over a wide range of water activity and [solute]

 

-skin bacteria constantly exposed to varying osmotic conditions.

Term
Saccharophile
Definition

require high [sugar] as osmotic regulator instead of salt.

 

-yeasts and molds.

Term
plasmolysis
Definition

is the process in plant cells where the cytoplasm pulls away from the cell wall due to the loss of water through osmosis.


-can be bad because you need water for metabolic reactions.

Term
acidophile
Definition
grow in acidic solution
Term
neutraphiles
Definition
grow in pH 5.5-8
Term
alkaphiles
Definition
grow in basic solutions
Term
Psychrophiles
Definition

love it cold

0-20 degrees

Term
Mesophiles
Definition

love it inthe "middle" temps

15-45 degrees

Term
Thermophiles
Definition

love it hot

45-70 degrees

Term
Hyperthermophiles
Definition

love it extremely hot 

70-120 degrees

Term
Superoxide Dismutase (SOD)
Definition
converts superoxide to peroxides.
Term
catalase
Definition
breaks to hydrogen peroxide to H20+O2
Term
Peroxidase
Definition
converts peroxides to H20 & NAD+
Term
barotolerant
Definition
survive in varying pressure environments; adaptable
Term
Barophiles
Definition

(piezophiles)

-deep sea bacteria. 

-grow best where pressure is higher than normal atmospheric pressure.

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