they have neither A nor B antibodies
why are people with AB blood called universal recipients?
synergistic reactions of gram positive cocci and proteus species
water microbio: what might cause a false positive test?
higher degree of reproducibility, greater sensitivity due to larger volume of water, shorter time
what advantages does the millipore filter have other the MPN method?
gram negative, non endospore forming, facultative anaerobes, lactose fermenting
3 characteristics of an organism that serves as a good sewage indicator
why dont health departments directly test for pathogens instead of using indicator organisms?
typhoid fever, cholera, travelers diarrhea
2 diseases transmitted in polluted water
2 protozoan diseases transmitted in polluted water
lives in the intestines and contaminated during slaughtering process
how might e. coli 0157:H7 enter ground beef
chemical or natural toxin causes immediate symptoms
microorganism itself grows inside your body and is the source of symptoms
no pathogens or food spoilage species
there are __________________ in hyperthermophilic bacteria so it is not a problem for the medical profession
slime fluxes of trees, insects and flowers
two places in nature where you may find yeast naturally
capture CO2 that could not dissolve
why was the flask sealed with a balloon?
to protect fermentation media from contamination and exposure to fresh air
what is the purpose of the gas vet with cork/
ph drops when CO2 dissolves
why is the ph important
add sulfur dioxide
vintners do this to prevent growth of acetic acid bacteria in their wine
takes shorter time
advantage reductase has over direct plate count
fermentation of lactose
what type of fermentation is involved in yogurt production
e. coli in cows
what is the most common source of bacteria in milk
bacillus cereus and brucella
infections transmitted to humans from milk
bacteria needs to feed on food to survive
why is milk more suitable vector of disease than water