Bacteriology Flashcards
1
Q
what lab tests are done in bacteriology
A
culture (sterile sites = blood, CSF. non sterile sites = wound, mouth)
serology
molecular techniques
antimicrobial susceptibility testing
2
Q
what colour are gram positive stains
A
purple
3
Q
what colour are gram negative stains
A
pink
4
Q
what are the two classes of gram positive bacteria
A
cocci and bacilli
5
Q
what are the two classes of staphylococcus
A
catalase positive - S.aureus
catalase negative - not very dangerous
6
Q
what gram stain is staphylococcus
A
gram positive cocci
7
Q
what bacteria are typically gram positive cocci in chains
A
streptococci
8
Q
what are the haemolysis results of strepto testing
A
alpha = agar goes green. strep pneumoniae beta = agar goes clear. group A is strep pyogenes. group B is strep agalactiae
9
Q
what is the gram staining of E.coli
A
gram negative bacilli
10
Q
what is the most common cause of diarrhoea
A
campylobacter
shigella
salmonella
