Bacteria and their gram stains Flashcards
What is Staph. aureus?
Gram-positive cocci
Appear in clusters (like purple grapes)
Coagulase positive (mostly)
What is Strep. pneumoniae?
Gram-positive diplococci
Appear in strands
Alpha or Beta haemolytic
What is Strep. pyogenes?
Gram-positive cocci
Appear in strings/chains
Beta haemolytics
What is Staph. epidermidis?
Gram-positive cocci
Appear in clusters (like grapes)
What is Enterococcus faecalis?
Gram-positive rod
Commensal bacteria
What is Enterococcus faecium?
Gram-positive rod
Commensal bacteria
Can cause neonatal meningitis or endocarditis
What is Escherichia coli?
Gram-negative rod
Anaerobic
0157:H7 strain (EHEC) causes HUS
ETEC and EPEC cause food poisoning
What is Clostridioides difficile?
Gram-positive rod
Spore forming
What is Clostridium tetani?
Gram-positive rod
Causes tetanus
What is Clostridium botulinum?
Gram-positive rod
Causes botulism
What is Clostridium perifringens?
Gram-positive rod
Causes food poisoning
What is Listeria spp.?
Gram-positive rod
Anaerobic
What is Yersinia pestis?
Gram-negative coccobacillus
Non-motile
Caused The Plague
What is Helicobacter pylori?
Gram-negative helical-shaped/spiral
What is Campylobacter jejuni?
Gram-negative helical-shaped/spiral
“Curved rod”/”Comma shaped”/”S-shaped”