QUIZ 10 Flashcards
E. coli in Phenol red broth is yellow (acid+) with bubbles (gas +) in
glucose and lactose
P. mirabilis is yellow (acid+) with no bubbles (gas -) in
Glucose
P. mirabilis is pink=fermentation (-) in
lactose
Ps. aeruginosa is pink=fermentation (-) in
lactose and glucose
S. aureus is ___ for catalase production and E. faecalis is _____. (bubbles=positive)
positive, negative
Ps. aeruginosa is ____ for oxidase production and E. coli is ______ (purple/dark blue=positive)
positive, negative
E. aerogenes is blue (_____) for citrate utilization and E. coli is green (____)
positive, negative
After adding ferric chloride to Phenylalanine Deaminase test P. Mirabilis is green (_____) and E. Coli is ______, (____)
positive, no change (negative)
After adding Iodine to the starch hydrolysis test _____ had a light color with a zone around it indicating it was positive, and E. Coli was negative.
B. cereus
The urease test revealed____ to be negative (yellow) and _____ to be positive (pink)
E. coli, P. mirabilis
After adding Kovacs reagent to the SIM test _____ was negative for all three (H2S, Indole,Motility) while E. coli was positive for Indole (pink) and motility and P. Mirablis was positive for ___ and ____
K. pneumoniae, H2S (black) and motility
Gram +, facultative anaerobes, normal flora on skin, mucous membranes, and throats
Staphylococci
Majority of all Staph. are caused by S. aureus, epidermidis, and _____
saprophyticus
S. epidermidis is usually not pathogenic?
true
Staph. ____ can cause UTI’s in females
saprophyticus
Gram-, facultative anaerobes, grow as single bacilli, part of normal flora in gastrointestinal tract
Enterobacteriaceae
Genera of prime medical concern in the Enterobacteriaceae
Salmonella, Shigella, Escherichia
Major source of food poisoning and water contamination, not a part of normal flora, causes Septicemia, gastroenteritis, typhoid fever
Salmonella
Causes dysentry
Shigella
Most common cause of water contamination, also causes UTI, dysentry, and kidney failure
Escherichia
___ aka E. coli is a small non-sporulating, Gram- facultative bacillus that ferments lactose to acid and gas
coliform
If no ____ is present, then the water is not likely to be contaminated with intestinal pathogens
E. coli
______ is selective for gram- organisms and differential for lactose fermentation
endo agar
______: water that is safe to drink, no coliforms are present
potable
