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What are the MacConkey test results for s epidermidis?
There is no growth because S.Epidermidis is a gram positive bacteria. MacConkey selects for gram negatives. the bile salts and crystal violet inhibit gram positive growth in the medium
What is S Acin in a urine culture report?
what does a report mean when is say 1,000-10,000 CFU/ml of Gram positive cocci and Gram negative bacilli. Is this a positive culture?
How is Gramicidin S produced?
Gramicidin S or Gramicidin Soviet is an antibiotic effective against some Gram positive and Gram negative bacteria as well as some fungi. It is a derivative of gramicidin, produced by the Gram positive bacterium Bacillus brevis. I found the answer from the website of BOC Sciences (bocsci.com)
What is the color of staphylococcus aureus after gram staining?
Post ID Special:Contributionssaid: "blue-violet.....because it is a gram-negative bacteria"Wrong...the color is correct, but S. aureus is gram-POSITIVE.
Is the mycobacterium smegmatis positive to acid-fast?
NO, s. epidermidis does not show up positive in an acid fast stain. The acid fast stain is a differential stain that differentiates cells with mycolic acids in their cells walls with those who do not. cells with mycolic acid are therefore acid fast. s epidermidis does not contain this waxy substance in their cell wall so it doesnt fall into this category.
What is the gram reaction of s epidermidis?
Gram positive, coccus shape.
Why is it important to differentiate S aureas from S epidermis or S Saprophyticus?
In terms of microbiology, S. aureus and S. epi can be differentiated through a number of metabolic tests. The tests being Methyl Red, Vogues-Prauskauer, Mannitol fermentation (of which S. aureus would be + and S. epi - ) and Oxidase (S. aureus - and S. epi + ).
Is staphylococcus aureus positive for gelatin?
Yes it is. This test can be used to differentiate between S. aureus (which is positive) and S. epidermidis (which is negative).
How do you tell the difference between S epidermidis and E faecalis?
Metabolic tests such as an oxidase test can be used to differentiate S epidermidis and E faecalis. Such a test can be conducted by adding H2O2 to the colony. The result for S aureus will be negative and the result for S epidermidis will be positive.
What are the MacConkey test results for s epidermidis?
There is no growth because S.Epidermidis is a gram positive bacteria. MacConkey selects for gram negatives. the bile salts and crystal violet inhibit gram positive growth in the medium
Is s mitis gram positive or negative?
S. mitis stains purple and therefore is a gram positive bacteria
Is staphylococcus arueus of upper resp gram positive or gram negative?
S. arureus is a gram posotive cocciScientific classificationDomain:BacteriaKingdom:EubacteriaPhylum:FirmicutesClass:BacilliOrder:BacillalesFamily:StaphylococcaceaeGenus:StaphylococcusSpecies:S. aureus
What is S Acin in a urine culture report?
what does a report mean when is say 1,000-10,000 CFU/ml of Gram positive cocci and Gram negative bacilli. Is this a positive culture?
Does streptococcus pneumoniae have fimbriae?
Frimbriae are structures related to Gram-negative bacteria. S. Pneumoniae, however, is Gram-positive. Therefore it does not have fimbriae.
How does a stained smear of S epi and E coli made from 7-day-old cultures would appear?
A 7-day-old culture may appear gram negative, when the organmisms are actually gram positive. Thus, S. epi would appear gram negative, and E. coli gram negative.
Does micrococcus luteus grow on macconkey agar?
MacConkey agar is designed to grow Gram-negative bacteria and also contains crystal violet dye which inhibits the growth of Gram-positive bacteria. Since S. aureus is Gram-positive it should not grow on MacConkey agar. No. MacConkey agar inhibits MOST of the Gram-positive bacteria. There are some Gram-positive bacteria that can tolerate bile-salt are able to grow in MacConkey agar. Enterococcus and some species of Staphylococcus are able to grow in MacConkey. (lack citation though)
How is Gramicidin S produced?
Gramicidin S or Gramicidin Soviet is an antibiotic effective against some Gram positive and Gram negative bacteria as well as some fungi. It is a derivative of gramicidin, produced by the Gram positive bacterium Bacillus brevis. I found the answer from the website of BOC Sciences (bocsci.com)
