Dictionary » B » Bacillus



(Science: bacteria) a genus of bacteria of the family Bacillaceae, including large aerobic or facultatively anaerobic, spore forming, rod shaped cells, the great majority of which are gram-positive and motile.

The genus is separated into 48 species, of which three are pathogenic or potentially pathogenic and the remainder are saprophytic soil forms. Many organisms historically called bacillus are now classified in other genera.

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Help with unknown

... typhi Shigella flexneri Shigella sonnei Proteus vulgaris Proteus mirabilis Here are the test results I ran for my unknown: It is a Gram-negative bacillus facultative anaerobe Motility + Citrate + MR - (Unsure of the MRVP results, so not using it as a reliable test) VP - Sulfur - Indole - Catalase ...

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by kayleighat
Sun Oct 20, 2013 2:43 am
Forum: Microbiology
Topic: Help with unknown
Replies: 0
Views: 3923

How to maintain sterility while preparing petri dishes

... on your plate from the air. If the contaminating colonies were identical to each other, it might suggest a spore-forming bacterium, such as some Bacillus spp. Multiple different colonies would indicate some wider problem in your working conditions. By any chance, were the contaminating colonies ...

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by biohazard
Mon Jun 24, 2013 8:56 am
Forum: Microbiology
Topic: How to maintain sterility while preparing petri dishes
Replies: 8
Views: 6449

overexpression xylanase gene

... in practical training. my supervisor given me a project to conduct. can u help me understanding this project? overexpression of xylanase gene of bacillus (mutant and wild type) into e coli 1. how can i perform this experiment? step by step if you may 2. how many type of vectors i have to use ...

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by nekonara
Thu Dec 13, 2012 6:59 am
Forum: Molecular Biology
Topic: overexpression xylanase gene
Replies: 2
Views: 2216

What bacteria could this be?

... Raised, Entire, Dark yellow, Negative for the catalase test and Negative for the oxidase test. The only possible bacterium I can think of is Bacillus subtilis. Any other ideas? Thank you.

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by jessaimeewhite
Sat Dec 08, 2012 1:34 pm
Forum: Microbiology
Topic: What bacteria could this be?
Replies: 0
Views: 1829

How does pH change during sporulation? - Help

Hi folks, I carried out an experiment where I observed sporulation in a Bacillus species. The bacteria was innoculated in this medium that contained a bunch of salts, glucose, and ammonium acetate. Every few hours or so, we were required to take the pH of the ...

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by keetner
Mon Oct 22, 2012 10:22 pm
Forum: Microbiology
Topic: How does pH change during sporulation? - Help
Replies: 2
Views: 2078
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