Characteristics Flashcards
What is the typical morphology of Streptococcus, Group B on a Gram stain?
Gram-positive cocci in chains
can be slightly elongated in CSF
What is the typical morphology of Streptococcus pneumoniae on a Gram stain?
Gram-positive diplococci (elongated in shape)
What is the typical morphology of E. coli on a Gram stain?
long, narrow Gram-negative rods (variable in length)
What is the typical morphology of Haemophilus influenzae on a Gram stain?
small, pale, pleomorphic, Gram-negative rods
What is the typical morphology of Neisseria menigitidis on a Gram stain?
Gram-negative diplococci (kidney-shaped)
What is the typical morphology of Candida albicans on a Gram stain?
budding yeasts and pseudohyphae
What is the typical morphology of Clostridium perfringens on a Gram stain?
Gram-positive rods
What is the typical morphology of Clostridium tertium on a Gram stain?
Gram-positive rods (often in long chains)
What is the typical morphology of Corynebacterium spp. on a Gram stain?
Gram-positive rods, variable in size and shape. The rods are usually grouped adjacently.
What is the typical morphology of Enterococcus faecalis on a Gram stain?
Gram-positive cocci (in chains)
What is the typical morphology of Lactobacillus spp. on a Gram stain?
Gram-positive rods (long, narrow)
What is the typical morphology of Listeria spp. on a Gram stain?
Gram-positive rods (short, narrow)
What is the typical morphology of Micrococcus spp. on a Gram stain?
Gram-positive cocci (clusters)
What is the typical morphology of Propionibacterium spp. on a Gram stain?
Gram-positive rods (pleomorphic), may be branched
What is the typical morphology of Staphylococcus spp. on a Gram stain?
Gram-positive cocci (clusters)
