Lab 4: Cell Morphology

cocci

spherical or oval bacteria

Diplococcus

pair of cocci

Streptococcus

chain of cocci

Staphylococcus

cluster of cocci

Diplo bacillus

bacillus that occurs in pairs

streptobacillus

chain of rods

coccobacillus

short and plump rod shaped bacteria

Bacilli

Rod shaped bacteria

spiral

are bacteria that re all single with no special arrange ment

How could you tell the difference between coccus and coccobacillus ?

a coccobacillus will be longer and more oval but still rod shaped ( will always be longer than wide

Explain the difference between bacillus and Bacillus( italicized !)

Bacillus is describing cell morphology ; bacillus refers to a specific genus bacteria

Which genus of bacteria is the only genus discussed in the lab that produces palisades or snapping morphology?

Corynebacterium

Gram positive staphylococci

Gram-positive streptobacilli

gram negative spirillum

diplo cocci gram negative