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4 Cards in this Set
- Front
- Back
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What are the medically important species of Streptococcaceae? (6)
Which is the medically important taxonomic group? |
S. pyogenes,, S.pneumoniae, S. agalactiae (troup B strep), S.mutans, Entercoccus faecalis, and enterococcus faecium
viridans streptococci, eg Streptococcus sanguis
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Diseases associated w/ streptococceae occur where? |
Skin, respiratory tract, and blood stream |
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Streptococcus
Gram + or -? What kind of fibrils? Which strepto.. appear as diplococci? What kind of shape is it described as? What are most species in terms of their type of metabolism? Catalase - or +? |
Gram + Fibris are lipoteichoic acid (LTA) + Mprotein S.Pneumoniae appear as diplococci, w/ a lanceet shape Most species are faculatative anaerobes Catalase negtive under aerobic conditions |
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Streptococcaceae
What is beta hemolysis, alpha hemolysis, and gamma hemolysis |
Some species and or strains can modify hemoglobin.
1. Beta hemolysis is complete lysis of RBC's w/ a c1. beta-hemolysis is complete lysis of RBC's with a clear or colorless zone 2. alpha-hemolysis is partial lysis associated with reduction of hemoglobin which |
