E.aerogenes is _____ for citrate acid fermentation a) positive b) negative c) Ne

Question

E.aerogenes is _____ for citrate acid fermentation a) positive b) negative c) Neutral d) None of the above The control used for the specific sugar test was ______. It was grows on a tube containing the sugar ______ To detect the presence of catalase, drops of ____ should be added to a sample of a culture. The presence of bubbles indicates a positive reaction. a) Hydrogen peroxide b) Iron chloride c) Kovac's reagent d) Methyl red The positive control used for the cytochrome oxidase test was a) Pseudomonas aeruginosa b) E. coli c) P. vulgaris d) B. subtilis The control organism used for the nitrate reduction test was _______ nitrates to nitrates and form a gas by product.

Explanation / Answer

6.a) Positive.

7. Control is citrobacter fruendii, the sugars are lactose and sacrose.

8. 4 to 5 drops of 3% hydrogen peroxide should be added.

9.Pseudomonas aeruginosa.

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