Term
| Standard Plate Count of Milk |
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Definition
| most reliable to determine sanitary quality of milk, High numbers means there is a higher liklihood of disease transmission, but does not means pathogens are present |
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Term
| Quality Control of Milk--Total Coliform Test |
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Definition
enumeration of coliforms;
uses violet Red Bile Agar |
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Term
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Definition
selective -- gram-negatives;
differential -- lactose fermentation
positive: purple/red with red haze of bile precipitate |
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Term
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Definition
antigen-antibodies complexes form and precipitate.
identity: curved line;
non-identity: crossed lines;
partial-identity: curved line with spur |
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Term
| What organism causes Strep throat, and what does the Strep test detect on the organism? |
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Definition
Strep. pyogenes;
Lancefield Group A antigen |
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Term
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Definition
detcts O and H antigens of enteric bacilli;
positive: clumping, for Shigella or Salmonella antiserum |
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Term
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Definition
| positive for S. aureus: grey clumps |
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Term
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Definition
Enzyme Linked ImmunoSorbent Assay;
for the detection of antigens in bodily fluids. |
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Term
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Definition
| a virus that attacks bacteria through the lytic cycle |
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Term
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Definition
| the virus will kill cells that will create a clearing zone in the bacterial growth |
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Term
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Definition
| amine groups are removed from amino acids and converted into ammonia; production of ammonia from organia ammonia. |
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Term
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Definition
| oxidation of nitrogen in the ammonium ion to produce nitrite; nitrite is then oxidied into nitrate. |
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Term
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Definition
| the conversion of atmospheric nitrogen to ammonia |
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Term
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Definition
| the conversion of nitrates to free nitrogen |
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Term
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Definition
| small, non-sporulating, Gram-negative facultative rods that ferments lactose to acid and gas |
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Term
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Definition
| selective: gram- (-); diff.:lactose ferm.; positve: green metallic sheen |
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Term
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Definition
| sele: gram- (+); diff: maltose and latose ferm.; positive: yellow/red/brown colonies. |
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Term
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Definition
| Sele: gram (-); Diffe: gram(-); positive: blue colonies. |
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Term
| what is used to test for ammonification, and what happens? |
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Definition
| Nessler's reagent; yellow or brown color change. |
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Term
| What is used to test for nitrate production, and what happens? |
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Definition
| Trommsdorf's reagent, Sulfuric acid, Diphenylamine reagent; blue-black color change. |
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Term
| what are some common pathogenic microbes found in food? |
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Definition
| Salmonella, Shigella, E.coli, Listeria monocytogenes, Staph. aureus |
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Term
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Definition
| gram (+), fac anaerobe, clusters, skin normal flora |
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Term
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Definition
| a rapid test to determine is a bacterium is resistant to penicillins ot cephalasporins |
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Term
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Definition
| gram (+), catalase negative, chains, skin normal flora, divided into group A,B,C,D, Pneumococcus, or viridans |
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Term
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Definition
| to identify gram-negative enteric bacilli based on biochemical testing; 14 test in one tube; 24 hr. incubation and obtain code from Enterotube Code Book. |
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Term
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Definition
| the study of the causes, occurrence, transmission, distrubution, and prevention of disease |
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Term
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Definition
| the first person that is ingected with a disease |
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Term
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Definition
| the total number of cases of a disease occuring in a population during a particular time period |
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Term
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Definition
| total # of cases/# of people in Pop. |
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