![]() ![]() To see how well you know the information, try the Quiz or Test activity.Indole has diverse signalling roles, including modulation of biofilm formation, virulence and stress responses. When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug.Īlthough it may feel like you're playing a game, your brain is still making more connections with the information to help you out. If you are logged in to your account, this website will remember which cards you know and don't know so that theyĪre in the same box the next time you log in. LEFT ARROW - move card to the Don't know pile.You can also use your keyboard to move the cards as follows: If you've accidentally put the card in the wrong box, just click on the card to take it out of the box. When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again. If you knew the answer, click the green Know box. Look at the large card and try to recall what is on the other side. Use these flashcards to help memorize information. Salmonella-sulfur reduction (+) black, shingella- sulfur reduction (-) no black if you were designing a medium to differentiate these two genera, which ingredients from this medium would you include.įerric ammonium citrate and sodium thiosulfate-these 2 chemicals produce black precipitate when bacteria reduce sulfur. This medium was designed to differentiate salmonella and shingella from other enterics. It increases the validity of the rest-hows the gram (+) bacteria which are inhibited by bile in HE agar, were a viable culture in what way does it increase the validity of the test results What purpose does the nutrient agar plate serve. Growth, blue/green, cannot ferment lactose-no yellow, cannot reduce sulfur-no black Growth, black, sulfur reducer-takes S04+H+->H2S(black) Growth, yellow, ferments lactose-produce acid (pyrovic acid) Isolate salmonella from shigella, isolate salmonella and shigella from other entericsīile, lactose, bromthymol blue dye, ferric ammonium citrate and sodium thiosulfateįood for E.coli, lactose fermenter, produces an acidįerric ammonium citrate and sodium thiosulfate (HE)įorm black precipitate in bacteria that reduce sulfur Is both a selective and differential mediaįavors growth of enterics, inhibits growth of gram (+) bacteria Tiny, upside down tube collects C02 gas bubblesįerments glucose-produces Acid+Gas. Protein-bacterial break down of peptone produces NH3 (base)Ĭarbohydrate-bacterial breakdown of glucose produces pyretic acid and C02 gas Peptone, glucose, durham tube, and pH indicator In the phenol red broth what does fermentation begin with What does the phenol red broth differentiateĮnterobacter species from each other and from other gram (-) rods based on their ability to ferment carbohydrates ![]() You have the enzyme to break down H202 = bubbles (02 gas) What is the catalase test used to differentiate betweenĬatalase (+) Micrococci-staphylococcus epidermidis.Caatalse (-) Streptococci-enterococcus faecalis Is a byproduct of electron transfer from proteins in the electron transport chain during oxidative phosphorylation What is the formula for the enzyme conversion in the catalase test To convert toxic hydrogen peroxide to water and oxygen gas Identifies organism that produce the enzyme catalase In the gelatin hydrolysis lab which turn into solid and whyĮ.coli, s.epidermidid=(-)-cannot break down gelatin S.marcesens, s.auteus, p.vulgaris=(+)-break down geltain In the gelatin hydrolysis lab which turn into liquid and why Peptone, beef broth, agar **bacteria cannot digest agar=remains a solid What happen when agar is replaced by gelatin Peptone, beef broth, gelatin **some bacteria can digest gelatin=becomes liquefied (+)= has enzyme, (-)= does not have enzyme In the gelatin hydrolysis (+) =, and (-) = In the gelatin hydrolysis lab what does the presence of a liquid = epodermidis (-), serrate marcescens (+) and Proteus vulgaris (+) from E. What is the gelatin hydrolysis used to differentiate between To identify microbes that produce the enzyme gelatinaseĬonverts gelatin into polo peptides/amino acids What is the gelatin hydrolysis test used for Protein derived from collagen (component of connective tissue-bones) ![]()
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