Gram Positive Bacteria

Gram positive cocci

staphylococcus

micrococcus

peptococcus

peptostreptococcus

streptococcus

staphylococcus

gram + cocci

clusters/pairs

facultative

catalase +

halotolerant

alpha hemolysis

partial RBC breakdown

beta hemolysis

complete RBC breakdown

gamma hemolysis

no RBC breakdown

micrococcus

gram + cocci

clusters. tetrads

catalase +

obligate aerobe

non-pathogenic

peptococcus, peptostreptococcus

gram + cocci

obligate anaerobe

ferments peptone

streptococcus

gram + cocci

chains

aerotolerant

catalase -

ferment lactic acid

beta and alpha hemolytic groups

gram + rods

bacillus

clostridium

lactobacillus

listeria

mycobacterium

cornyebacterium

propionibacterium

eubacterium

actinomyces

streptomyces

mycoplasma

bacillus

endospore forming

aerobic or facultative

catalase +

forms capsule

found in soil

clostridium

endospore forming

strict anaerobe

catalase -

found in soil/intestines

lactobacillus

produce lactic acid

no spores

common in dairy

acidophile

listeria

very short rods (0.5 microns)

no spores

psychotolerant

foodborne illness

mycobacterium

gram + and acid fast

mycoplasma

only live inside other cells

very small, small genome

no cell wall

corynebacterium

aerobic

non motile

club or V shaped

propionibacterium

aerotolerant

gram +

ferment lactic acid (produce propionic acid)

eubacterium

obligate anaerobe

gram +

major normal flora of large intestine

opportunistic pathogen

actinomyces

gram +

no spores

branching filaments

streptomyces

gram +

branching filaments

form true spores