0
H2S (hydrogen sulfide) Test:
This test is used to check for Enteric gram negative bacilli by checking for the enzyme thiosulfate reductase which is produced by various intestinal microorganisms. So if bacillus subtilis can produce this enzyme then this test will give you a pos. (black in color) result.
Yeah, no kidding. I'm pretty sure the question was what the result of it, or they wouldn't specify that it was b. subtilis. and it is positive for H2S production.
Wiki User
∙ 12y ago
Add your answer:
Earn +20 pts
What is Oxidase test results for bacillus subtilis?
It is NEGATIVE
Is Bacillus subtilis positive for lactose fermentation?
No, it is negative.B. subtilis on EMB agar:http://www.microbelibrary.org/microbelibrary/files/ccImages/Articleimages/Atlas_EMB/Bacillus-subtilis_EMB_fig11.jpg
What factors dictate the choice of test in a combination medium?
Hydrogen Sulfide production, Motility, and Indole production.
What is Urease test results for bacillus cereus?
Bacillus cereus is oxidase negative -
What is the difference between bacillus and clostridium?
Bacillus and Clostridium are both Gram positive, spore forming, bacilli (rods).Bacillus sp. are aerobic.Clostridium sp. are anaerobic.After performing a catalase activity test, Clostridium will be negative and Bacillus will be positive for catalase activity.
What is the result of citrate test for bacillus subtilis?
blue/positive
What is Oxidase test results for bacillus subtilis?
It is NEGATIVE
Does bacillus subtilis have a positive reaction for ONPG Test?
yes it have positive reaction for ONPG test
Is Bacillus subtilis positive for lactose fermentation?
No, it is negative.B. subtilis on EMB agar:http://www.microbelibrary.org/microbelibrary/files/ccImages/Articleimages/Atlas_EMB/Bacillus-subtilis_EMB_fig11.jpg
What is the difference between bacillus coccus and spirillum?
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.
What compound is responsible for the results in the lead acetate test?
Hydrogen sulfide is tested with lead acetate.
How can you test bacillus megatrium from bacillus cereus?
bacillus megatarium test positive for sucrose where creus doesnt
What factors dictate the choice of test in a combination medium?
Hydrogen Sulfide production, Motility, and Indole production.
Why would peptone ion agar be used in a biochemical test?
peptone agar is used to show the production of hydrogen sulfide
What is the identification test of hydrogen gas?
Place a piece of Lead acetate into the possible source. If Hydrogen Sulfide is present, the paper will turn black.
In the use-dilution test a chemical is evaluated by its ability to kill 10 6 to 10 8 dried Clostridium sporogenes or Bacillus subtilis endospores Why is this considered a stringent test?
A measure of determining the effectiveness of a disinfectant using serial dilutions. definition found in intro to microbiology by Tortora, Funke, and Case.
What is a VP test for bacillus?
negative!
