Systemic Bacteriology Flashcards
name three shapes bacteria can have
cocci
bacilli
spiral
what is a sphere shaped bacteria called?
coccus
what are two spherical bacteria next to each other called?
diplococcus
what is a bacillus?
rod shaped bacteria
what is a rigid spiral shaped bacteria called?
spirillum
what is a flexible spiral shaped bacteria called?
spirochete
name an organism that doesn’t stain well with the gram stain
mycobacterium tuberculosis
what groups does the gram stain divide bacteria into?
gram positive and gram negative
what does aerobic mean?
bacteria grows in oxygen
what does obligate aerobe mean?
bacteria requires oxygen
what does obligate anaerobe mean?
bacteria is killed by oxygen
what does facultative anaerobe mean?
bacteria tolerates oxygen
what is selective media?
a media that contains specific substances that favour the growth of one organism over another
what is differential media?
media with chemicals that produce visible changes when a certain organism is present to allow identification