Basic Science Flashcards
what are the three bacterial shapes
coccus bacillus spirochaetes
describe gram positive bacteria
purple thick layer of peptidoglycan exotoxin
gram neg
pink 3 layers with thin layer of peptidoglycan endotoxin
alpha haemolysis
Caused by enzymes that denature the haemoglobin inside red blood cells causing greenish discolouration round the colony.
beta haemolysis
: Caused by enzymes that lyse (breakdown) red blood cells causing complete clearing round the colony (can be seen as either yellow or with clearing around the colony). The most pathogenic Streptococci are beta-haemolytic.
gamma haemolysis
brownish in colour/ just colony of bacteria with no haemolysis
what are the alpa haemolytic strep
strep pneumo
strep v
what are the beta haemolytic strep
groap a (strep pyogeens) group b streo
what are the gamma haemolutic strep
enterococcus
coag pos staph
staph aureus
coag neg staph
staph epi
what is the main gram positive anaerobic organism you need to knlow about
clostridium
what is the main bacteria in gas gangrene
clostridium perfringens
diptheria is gram
positive
bacillus cererus is gram
positive
anthrax is gram
positive
what are the two gram neg strict aerobes
legionella and pseudomonas
what are the main gram neg cocci
Neisseria gonorrhoea and meningiditis
what are the small gram neg bacilli
b pertussis
h influ
what are the large gram neg bacilli
ecoli klebsiella proteus samlonella shigella ecoli 0157