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To diagnose Enterococcus faecalis: (Facultative anaerobic) First, do the Gram stain: Gram positive cocci in chains catalase test: negative PYR disc: positive
I had a bacterial unknown of M. luteus in my microbiology lab. M. luteus is a Gram positive cocci (as seen by a gram stain). A good definitive test for Gram + cocci is the catalase test. M. luteus is catalase positive. Then a nitrate test can be performed to determine that M. luteus is nitrate negative. Those alone should be enough to confirm M. luteus.
No, Catalase +ve, Coagulase +ve, Gram + cocci. Citrate test is usually used to differentiate members of the Family Enterobacteriaceae. Check Bergeys systematic bacteriology. 1980
Gram staining would be the test that would be useful to differentiate between the two genera if you see gram positive cocci under the microscope, especially if you can't quite tell the arrangement. Another name for the gram staining test is Gram's method.
Gram + coccus. Positive methanol test. Yellow on agar.
To diagnose Enterococcus faecalis: (Facultative anaerobic) First, do the Gram stain: Gram positive cocci in chains catalase test: negative PYR disc: positive
I had a bacterial unknown of M. luteus in my microbiology lab. M. luteus is a Gram positive cocci (as seen by a gram stain). A good definitive test for Gram + cocci is the catalase test. M. luteus is catalase positive. Then a nitrate test can be performed to determine that M. luteus is nitrate negative. Those alone should be enough to confirm M. luteus.
No, Catalase +ve, Coagulase +ve, Gram + cocci. Citrate test is usually used to differentiate members of the Family Enterobacteriaceae. Check Bergeys systematic bacteriology. 1980
Gram staining would be the test that would be useful to differentiate between the two genera if you see gram positive cocci under the microscope, especially if you can't quite tell the arrangement. Another name for the gram staining test is Gram's method.
Gram + coccus. Positive methanol test. Yellow on agar.
Gram negative and positive test.
Cyanobacteria refers to a phylum of bacteria that obtain their energy through photosynthesis. The gram test for cyanobacteria is negative.
No, it is present/positive. • Cocci* • Gram-Positive* • Non-motile* • No Capsules* • No Spores* • Facultative Aerobe* • No Glucose, Lactose*, Mannitol* Fermentation • No Urease*, Catalase*, Oxidase*, Ligase*, Protease* Production • Production of Indole*, tryptophonase*
They are bacteria, their morphology is basically two cocci cells fused with one another. They test positive for the Gram staining test. An example of GPDC is the bacteria genus Streptococcus pneumoniae, the major causative agent for pneumonia; a pathological lung condition
Gram Stain to determine gram negative and shape or streak on a Agar plate selective for gram negative such as Desoxycholate Agar (DES). A SIM (Sulfur, Indole, Motility) Test or a Kiliger's Iron Agar (KIA) Test can confirm the production of H2S. *I would choose Streaking on DES to isolate the gram Negative bacteria, and then stab inoculate a SIM tube. Black precipitate confirms H2S production positive.
Serial dilution technique
One way to remember that gram negative bacteria turn red is to think of the phrase "red is negative." This reminds you that when performing a Gram staining test, gram negative bacteria will take on the red color.