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Blood agar
Micro lab exam
6
Biology
Undergraduate 4
10/12/2011

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Cards

Term
What bacteria alpha hemolysis on blood agar? and what color will it be?
Definition
E. coli and it willbe a green/brown color around the lysis of red blood cell
Term
What bacteria would show beta hemolysis? and what color would it be?
Definition
S. aureus and complete breakdown of red blood cell creating a clear effect 
Term
What bacteria will show gamma and what would happen to the medium?
Definition
  • S. epidermidis, S. enterditis, P. vulgaris
  • there will be no change 
Term
what type of media is blood agar? selective or differential 
Definition
differential
Term
blood agar 
Definition
  • an enrichment media 
  • from sheep blood and tsa extract, serum- to support the growth of fastidious bacteria 
  • used to isolate bacter from cerebal spinal fluid.

 

Term
what is the enzyme that breaks down red blood cells
Definition
hemolysin an exoenzyme
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