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Growth Requirements: Effects of Nutrition
Micro Lab
7
Microbiology
Undergraduate 3
03/01/2011
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Term
Carbon Sources
 Definition

  • Required by cell in order to break down cellular energy to drive biosynthesis
Term
Autotrophs
 Definition

fix inorganic carbon into organic carbon forms

 

processes such as photosynthesis and chemosynthesis
Term
Heterotrophs
 Definition
must take up organic carbon 
Term
Prototroph: mutant
 Definition
able to synthesize all cellular constituents (ie amino acids) from macro and micro elements present in growth medium 
Term
Auxotroph: nut mutant
 Definition
Fastidious, needs growth factors b/c it can't synthesize essential cell components from basic elements. 
Term
Growth is absent w/o supplement
 Definition

  • organism can't synthesize component of its own
  • component considered a vital growth factor and organism auxotrophic
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