Gram Positive Bacteria

Cultures

100

Between strep and staph, this genus is known for having smaller colonies

Streptococci

200

This beta hemolytic streptococci is bacitracin susceptible/sensitive

GAS (Group A Strep) / S. pyogenes

300

This alpha hemolytic streptococci is differentiated by being optochin resistant

Viridans Streptococci

400

This streptococci exhibits no hemolysis and is able to grow in high concentrations of NaCl

Enterococci (E. faecium and E. faecalis would both be correct as well)

500

This coagulase negative staphylococci is resistant to novobiocin

S. saphrophyticus

Microscopy and other testing

100

This genus of bacteria is known for looking like a cluster of grapes under the microscope.

Staphylococcus

200

Between strep and staph, this bacterium is non-motile due to its lack of flagella

Staphylococci

300

This gram positive bacteria is known for its "lancet shape"

Streptococcus pneumoniae

400

This alpha hemolytic strep is encapsulated

S. pneumoniae

500

This genus of gram-positive bacteria would be classified as a spore-forming anaerobic bacilli

Clostridium

Name the test (or test result)

100

This test would give you bubbles if performed on staph

Catalase testing

200

Group A and Group B Strep can be differentiated by this test

Bacitracin sensitivity

300

This test result helps differentiate Staphylococcus aureus from both S. saprophyticus and S. epidermidis

Positive coagulase test

400

When looking to differentiate between GAS and GBS, this test result would point you in the direction of Group B strep

Bacitracin resistance

500

This type of testing helps differentiate between different alpha-hemolytic bacteria

Optochin sensitivity testing