microbiology lab 2 Flashcards
how can you describe a colony?
punctiform, circular, rhizoid, irregular, filamentous
how can you describe the edge?
entire, undulate, lobate, filamentous, curled
how can you describe the surface?
smooth and glistening, rough, wrinkled, dry or powdery
how can you describe the elevation?
flat, raised, covex, pulvinate, umbonate
what is enteric?
bacteria that exist in the intestines of animals/humans
what is aerobic?
bacteria that can grow/live when oxygen is present
what is anaerobic?
bacteria that do not require oxygen for growth and cannot have present
what is pathogenic?
a microbe able to cause damage in susceptible host
what does it mean when colonies on BAP present with red surrounding colonies?
non-hemolytic bacteria present (gamma hemolysis)
what does it mean if colonies are present and surrounded by a green zone?
partially hemolytic bacteria present (alpha hemolysis)
what does it mean if colonies are present and surrounded by a transparent clear zone?
completely hemolytic bacteria present (beta hemolysis)
what does it mean if no colonies are present?
no bacteria present in sampel or accidentally killed in incubation of plate by overheating
what will the make plate grow?
designed to grow gram negative bacteria
what does it mean if no bacteria are present on MAC plate?
cannot grow in prescene of bile salts/ crystal violet
gm+ and non-enteric
what does it mean if colonies are visable and are white?
gm- enteric bacteria are lac- therefore, cannot use lactose and instead metabolize the peptide in the media,