Observe these completed oxidase tests for two organisms. Which organism produces cytochrome c oxidase? BD BBLTM DrySlide
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Nitrate Reduction Test JOGOO Murton Publishing Company A nitrate reduction test is used to determine if a bacteria can use nitrate (NO3) as a terminal electron acceptor for anaerobic cellular respiration. When this happens, nitrate may be reduced to a variety of end products including nitrogen gas (N₂) and nitrite (NO2). The first step of this test detects reduction to N₂. If step 1 is negative or inconclusive, then step 2 is performed to detect reduction to NO₂. If the step 2 result is negative, a third step is performed to detect the presence of remaining unreduced NO3". indicates a positive result for reduction of nitrate to N2, but only if that microorganism capable of fermenting to gas end products. A red color A bubble in Durham tube is is not
If a step 2 result is negative, we proceed to step 3. What reagent (s) is/are added in step 3? Select ALL that apply sulfanilic acid Kovac's KOH a-naphthol zinc a-naphthylamine
QUESTION 26 Observe these DNase test results. Which organism(s) produce(s) DNase? Choose ALL correct answers: A B a. A b. B C Morton Publishing Company C.C d. None of these organisms produce DNase
Assuming that these tubes are currently at a temperature below the melting point of gelatin, which organism produces gelatinase? A B Morton Publishing Company O a. A Ob.B Oc. None of these organisms produce gelatinase
Imagine that three organisms were inoculated to urease agar and incubated for 24 hours. At 24 hours, none of the tubes demonstrated any color changes, so incubation was then continued for a full 6 days. After 6 days, the tubes appear as seen below: Morton Publishing Company Which tube(s) demonstrate a weak positive (+) result for urease production? Choose ALL correct answers: a. A b.B Dcc d. None of the tubes demonstrate a weak positive result
Look at the image of Urease tubes from previous question. Which tube(s) demonstrate a negative (-) result for urease production? Choose ALL correct answers: a. A b.B C.C d. None of the tubes demonstrate a negative result