Bacteriology Flashcards
Difference in cell wall between gram + and Gram - bacteria?
Gram - has LPS present and thinner peptidoglycan (periplasmic space present)
Techoic acid found on gram negative or positive bacteria?
Gram +
What causes Lipid A septic shock?
LPS on outer membrane of gram -
What do obligate anerobes lack?
superoxide dismutase and catalase
inhibits transformation?
DNAse
Viral filter inhibits?
Transduction
Conjugation inhibited by?
bacterial filter
Which genetic excahnge is with environmental DNA?
Transformation
Which gram + coccie is catalase positive and which is negative?
Catalase positive is staph and negative is strep
Staph aureus is ccoagulase + or negative?
+
Staph aureus responsible for what?
TSS
Scalded skin syndrome
Wound infection
honey colored crusts
Coagulase - and novobiocin sensitive?
staph epidermis
Staph epidermis causes what?
think catheters/implanted devices due to biofilm
Staph sapro is novobiocin resistant of sensitive?
resistant
What does staph sapro cause?
UTI
Catalase negative (So we know its strep) beta hemolytic and bacitracin sensitive?
S. Pyogenes
S. pyogenes (Group A strep) symptoms?
pharyngitis, scarlet fever, gomerulo nephritis
S. agalactiae is bacitracin resistant or sensitive?
resistant
Neonatal sepsis and meningitis caused by what kind of strep?
agalactiae
Catalase negative alpha hemolytic and optochin sensitive is…
S. pneumo
What differences between S. pneumo and S. mutans (viridans)?
S. pneumo has capsule and is bile soluble
Dental caries?
S. viridans
bacteria capsule purpose?
to prevent it from being phagocytosed
Anterior nares?
Staph aureus