Microbiology Flashcards
Microaerophilic
Reduced oxygen
Facultative anaerobes
Prefers oxygen
What specific requirements do bacteria have
Temperature, ph, oxygen, nutrition
Mesophiles
Require a temperature of 24-40 degrees Celsius
Psychrophiles
Require a temperature less than 24
Thermophiles
Require a temperature greater than 40
What are the cell shapes
Cocci, bacilli, and spirals
What are the cell arrangements
Chains
Clusters
Pairs
What are spores resistant to?
Heat, radiation, and chemicals
What are the 4 phases of bacterial growth?
Initial
Exponential
Stationary
Final
Define transport media
Kept alive but not encouraged to grow
Define enriched media
Fastidious microbes
Selective media
Only grow the bacteria you want
Enrichment media
Grow a certain type of bacteria
Alpha hemolysis
Partial
Beta hemolysis
Complete
Gamma hemolysis
Can’t identify
Delta hemolysis
Shows alpha and beta
What is macconkey agar
Lactose fermenting enterobacteria
Selective and differential
Grow as pinkish red colonies
What does thioglycollate broth culture
Anaerobic bacteria
Bismuth sulfate agar
Suppresses Caliform and allows salmonella to grow
Dermatophyte test media
Terns red in the presence of dermatophytes
What are he 3 bacterial sample collections
Aspiration
Swab
Imprint
Gram stain
Categorizes bacteria to gram positive or gram negative