Complete the diagnostic keys Investigate characteristics of microbes online Diag
ID: 191966 • Letter: C
Question
Complete the diagnostic keys Investigate characteristics of microbes online Diagnostic Key for Gram Positive Key for r Lab Report nlfine and fll in the blanks with keywords. All 4 figures ched toyour Lab Report (Diagnostic keys have 5 points). Cocci Staphylococcus spp Micrococcus spp. Staphylococcus spp Bile Escui Mannitol-7 S. saprophyticus S epidermidis M. luteu M varians E faecals S bovis s mits S pyogenes 6.5% NaCl Both ING) S bovis beta S. mitisS pyogenes M. luteus M varians S epidermidi S saprophyticus s pneumoniae Bile Solubilty Glucose-7 Fructose-7 S mitis NG No growth; G Growth: A/G-Acid and gas: A-Acid only 20Explanation / Answer
In the first page: To differentiate staphylococcus from micrococcus is that the gender Staphylococcus are capable of producing acid from mannitol (meaning a positive test), therefore you must put the bacteria described in number 3.
In the first page is E. faecalis (13) since the genus Enteroccus is able to support and media with 6% NaCl solution.
In the frist page: M. Luteus is able to produce acid without from glucose in aerobic conditions (so put positive and A) and S. epidermidis is able to use the fructose. S. saprophyticus is able to produce acid from fructose but is a variable test.
Second page:
In mannitol negative is B. cereus, a selective media for this bacteria is the Agar MYP B. cereus do not use the manitol in this media but produces other enzimes for use the other components of the media . In the same page B. megaterium is a negative result for the VP test, instead B. subtilis is positive for this reaction.
C. intermedium is considered a biovar of C. diphtheriae (is a pathogen) is capable of use nitrites and produce toxins.
For the third page:
The genus Neisseria is capable of use glucose but for diferentiation of spices ohter carbohydrates are used, this is very important and a very delicate question because by diagnostic tests if there is N. gonorroeae can be ruled out a violation or cases of sexual abuse. Also is important make the diferentiation because another species Like (N. meningitidis) could case meningitis.
Incredibly E. coli, despite having a high metabolic capacity, is not able to use citrates as a source of goat in a way that gives a negative test result. C. intermedius is variable for the use of citrate.
In the fourth page: Proteus mirabilis do not produce indol in the indol test, the result is negative. Proteus vulgaris is a positive result for indol test (most of time), additionally when growing in the plates they produce swarming by the enormous quantity of flagella that they have are very mobile and produce that effect.
Hints: Remember that bacteria are not machines and will always give the same results, for the use of certain compounds that can give variable results, that's why depending on the bibliography you can appear positive in a certain percentage and negative in another percentage. Additionally you can see in the media labels which bacteria are used and if they give positive or negative tests.