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Q: Name one indole positive organism
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What is the name for an organism that stays in one place?

dead organism

Name an example of a one celled organism?

E.coli is one.

What are the advantages in communication for having only one correct name for an organism?

Having one correct name for an organism has many advantages. This allows all people t communicate about the organism without confusion.

How many genus names can an organism have?

An organism can only have one genus name as part of its scientific classification. The genus name is always capitalized and is used alongside the species name to give the organism its unique scientific name.

What is a one-celled organism's name?

unicellular organisms.

Why determine motility and h2s before adding kovac's reagent?

Determining motility involves observing the movement of bacteria, which can be hindered by adding Kovac's reagent as this reagent can affect bacterial motility. Also, hydrogen sulfide production (H2S) is an important characteristic that can help differentiate bacterial species before adding Kovac's reagent, which is used to detect indole production. Waiting to add Kovac's reagent until after these tests ensures more accurate results.

Name one organism that can be a primary and a secondary consumer?


What is another name for an organism that has more than one cell?

A Eukaryote

Name one organism found on the shore?

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What is the general name for a organism that is made up of one cell?


Microbiology - what is SIM test?

Its a test where a semisolid agar called Sulfide-Indole-Motility medium (or SIM medium) is inoculated with a bacteria to test for hydrogen Sulfide, Indole, and Motility of the organism. The medium is inoculated by a swab and stab type method (rub some bacteria on the surface of the medium and stab a straight hole through the medium using a straight wire with the bacteria on it). Incubate the bacteria for about 24 hours and then begin testing.... If hydrogen sulfide is present, it will react with the sodium thiosulfate in the medium and the indicator, ferric ammonium citrate, to produce ferrous sulfide which falls out of solution as a blackish precipitate. The presence of hydrogen sulfide typically means that the bacteria produces the enzyme cysteine desulfanase which breaks up the cysteine in the medium into, among other components, hydrogen sulfide. The Indole portion of the test is performed by adding Kovac's reagent to the inoculated medium. The Kovac's reagent reacts with the indole(if indole is present) to produce a pinkish-red or redish-purple ring around the top of the test tube. If indole isn't present, there will be no color change. The presence of indole means that the bacteria produces tryptophanase, an enzyme which breaks down tryptophan into smaller components, one of which being indole. The Motility aspect of the test is done by checking the medium for turbidity, or "fuzziness". If the medium has become fairly turbid throughout the medium, then the bacteria is motile. If the medium is clear and the only turbid appearance is in the stab line, then the bacteria is non-motile. Unfortunately, the motility aspect of this test typically gives false negative results. Sometimes the temperature that the bacteria was incubated at wasn't optimum for the species, sometimes the bacteria only have weak motility, sometimes the bacteria's flagella can get damaged which would impair motility, etc... The point is, this test is good if you want to know whether or not the bacteria you're testing produces tryptophanase or cysteine desulfanase. The motility aspect of the test is suspect to question, at least if the test result was negative for motility(a large amount of turbidity in the medium is a definite sign of motility and is hard to refute though).

Name of one electrode and say is positive or negative?

The Cathode is the negative electrode; the anode is the positive electrode