Citrate utilizaton- Negative
bacillus megatarium test positive for sucrose where creus doesnt
it is positive
Bacillus subtillus will test positive when performing a VP and Citrate test. Also, bacillus cereus is much more motile. It isn't as dependable as the chemical tests, but the cereus colonies will appear wispy and more widespread on an agar plate than those of subtilis.
Some B. cereus produce urease and some do not.
The test should end up being negative.
Indole - Negative Catalase - Positive Oxidase - Negative Methyl Red - Neagtive voges Proskauer - Positive citrate - Positive Starch Hydrolysis - Positive
The positive in purpule color
imvic test can be performed
The easiest way to distinguish one from the other is by performing an amylase test. Bacillus cereus will test positive by displaying a clear zone around the bacteria. Clostridium sporogenes will test negative because it does not produce the exoenzyme amylase. Another way is by performing a catalase test. Bacillus will test positive because it's an aerobe and Clostridium will test negative because it's anaerobic.
The B.cereus has a positive citrate test and a negative Voges Proskauer.
gram's test- positive and rod shape.
Indole : Negative Catalase : Positive Starch Hydrolysis: Positive VP Test: Positive Urease: Negative Nitrate Reductase : Positive Gelatinase: Positive
biurets test is the biochemical test for enzymesan enzyme is a protein and as the biochemical test for proteins is biurets,, its the same
biochemical test for p.gingivalis
The Bacillus genus is usually negative in regards for the Oxidase test.
A test that you can do to confirm for example that your unknown is Bacillus subtilis from Bacillus megaterium is VP because B.subtilis is positive for VP and B.megaterium is negative for VP. There are plenty of test that you can do for example a gram stain, check if its aerobic, anaerobic, facultative anaerobic, check if its motile, is it a rod or cocci.. all those test help you find out more about your organism. There isn't only one test that you can do to confirm if your organism is from the Bacillus species you have to do multiple test because plenty of bacteria are gram positive, motile, rods, aerobic. Hope this helps:)The Starch Hydrolysis, it form a white clearing zone around the bacteria
Most Bacillus species are Catalase positive.
You can't use a Biochemical test to ID a virus.
It is NEGATIVE