Table Tool Layout References Mailings Review view Design Layout 9 Tell me what y

Question

Table Tool Layout References Mailings Review view Design Layout 9 Tell me what you want to do Record your observation of grown cultures: Test performed S. marcescens Hemolysis test B hemolysis B hemolysis Lactose fermentation McConkey test None lactose Mannitol salt test Mannitol non-fermenter Mannitol fermenter Enterobacter acrogenes Escherichia coli EMB test S. marcescens Antibiotics used and conc- S. aureus S I R IZ(mm) 40.2 Gentamycin Penacillin S I RILZ(mm) 40.2 S I IZ(mm) 35.2 Ampicillin S I RILZ(mm) 40.2 S I RIZ (mm) 35.2 Tetracycline (S se

Explanation / Answer

3) Answer

    -hemolysis :- Green zone around growth -RBC partially hemolyzed

    -hemolysis :- Clear zone around bacterial growth -RBC hemolyzed completely (pathogenic)

    -hemolysis :- No change around growth -RBC is not hemolyzed (no hemolysis)

4) Answer

            MacConkey’s Agar is both a selective and differential growth media; it is selective for Gram negative bacteria and can differentiate those bacteria that are able to ferment lactose. This media inhibits the growth of Gram-positive bacteria due to the presence of crystal violet and bile salts.

5) Answer

Purpose of the Candle jar

            Candle jar used for anaerobiosis process. In the Candle jar, a lit candle was placed in as air-tight jar such that when it went out it would be because it used up all the available oxygen.

6) Answer

For an accurate reading your plates should be observed from precision and accuracy in measurements in colony count.

7) Ansvwer

Mannitol Salt Agar and MacConkey’s Agar are used to identify a strain of pathogenic staphylococi because both a selective and differential medias.

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