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What else can I help you with?
What are results for a acid-fast test for enterobacter aerogenes?
Enterobacter aerogenes is a gram-negative bacterium and typically does not retain acid-fast stains due to its cell wall structure. Therefore, a positive result on an acid-fast test would be unlikely for Enterobacter aerogenes.
Is mycobacterium phlei gram positive or negative?
Although mycoplasma lack a cell wall and therefore test gram negative, they are considered to be descendents of 'nonsporulating and endospore forming gram-positive bacteria' (Madigan et al., 2009), such as Lactobacilli, Bacilli and Streptococci, (Dandekar et al., 2002), which have lost their cell wall. Mycoplasmas are therfore classed as gram- positive bacteria. This is supported by ribosomal RNA and DNA analysis.
Would an acid fast organism be gram positive or gram negative?
Acid fast organism would be gram positive.----------------------------------------------------------------------------------------------------The above answer is incorrect. Acid-fast bacteria would be "gram negative."Bacteria such as these have very different cell walls which contain a great deal of waxy material, although they still contain peptidoglycan. This waxy material prevents stain penetration, rendering the cell invisible.Since these acid-fast bacteria are not stained by Gram's Stain Method they have been characterized as "gram negative."----------------------------------------------------------------------------------------------------Heres what the text book says. This is a tricky question based on opinion."Their cell walls are unique among the gram-positive bacteria because they consist of other layers in addition to peptidoglycan. An important component of their walls is a group of fatty acids called mycolic acids. Some have proposed that the mycolic acids form a bilayer structure that is analogous to the outer membrane of gram-negative bacteria."So answer one is technically correct but they characteristics as those of gram negative cells (answer 2).Page 58Prescott's MicrobiologyEdition: 8thAuthor(s):Willey; Sherwood; WoolvertonISBN13:9780073375267ISBN10:0073375268Format:HardcoverPub. Date:1/1/2010Publisher(s):MCGRAW HILL
What is the gram reaction of non-acid- fast bacteria?
Non-acid-fast bacteria typically have a Gram reaction of either Gram-positive or Gram-negative. Gram-positive bacteria retain the crystal violet stain and appear purple under a microscope due to their thick peptidoglycan cell wall. In contrast, Gram-negative bacteria do not retain the crystal violet stain; they take up the counterstain (usually safranin) and appear pink due to their thinner peptidoglycan layer and outer membrane. The distinction is important for identifying and treating bacterial infections.
Is staphylococcus aureus acid fast?
No, Staphylococcus aureus is not acid-fast. Acid-fast bacteria, like Mycobacterium tuberculosis, retain the stain when treated with acid-alcohol. Staphylococcus aureus is a Gram-positive bacterium that retains the crystal violet stain in the Gram staining method.
Is acid fast bacteria gram positive or negative?
Acid-fast bacteria are gram-positive.
Is the acid fast stain positive or negative in the sample?
The acid-fast stain is positive in the sample.
What kind of bacteria can harm animals?
Just about any - gram negative, gram positive and acid-fast are all known to have pathogenic bacteria within them.
Do acid-fast bacteria stain gram-negative when subjected to the gram stain?
No, acid-fast bacteria do not stain gram-negative when subjected to the gram stain.
Is the acid fast stain result positive or negative for the sample?
The acid-fast stain result is positive for the sample.
Is the acid fast staining result positive or negative for the sample?
The acid-fast staining result for the sample is positive.
What are results for a acid-fast test for enterobacter aerogenes?
Enterobacter aerogenes is a gram-negative bacterium and typically does not retain acid-fast stains due to its cell wall structure. Therefore, a positive result on an acid-fast test would be unlikely for Enterobacter aerogenes.
What gram reaction do you expect from acid-fast bacteria?
Gram positive
How does acid-fast bacteria differ from gram bacteria?
Acid-fast and Gram stain are two different types of staining technique. Bacteria that stain with acid-fast techniques are called "acid fast bacteria." Bacteria that don't stain with acid-fast techniques are called "not acid fast." At the same time, bacteria can be "Gram-positive" or "Gram-negative." For example, Nocardia is a bacterium that is acid-fast and Gram-positive. Usually the reason people care about these designations is in order to figure out what species a bacteria is. The issue usually arises in the context of a patient's sample that has grown bacteria. At first the doctors won't be sure which bacteria it is. They'll have guesses based on how the patient presented, but they won't know, and they want to know because that will help them pick the best treatment. A first step toward "speciating" the bacteria is to do a Gram stain on it. This is because for historical reasons determining whether a bacteria is Gram-positive or Gram-negative goes a long way toward speciating it. Acid-fast staining is less common, and is used mostly for diagnosing tuberculosis (caused by Mycobacteria, which are acid-fast bacteria). There are details about the cell walls that determine whether an organism will stain with Gram stain (thick walls without mycolic acids) or acid-fast, but hopefully this answers your question.
Is mycobacterium phlei gram positive or negative?
Although mycoplasma lack a cell wall and therefore test gram negative, they are considered to be descendents of 'nonsporulating and endospore forming gram-positive bacteria' (Madigan et al., 2009), such as Lactobacilli, Bacilli and Streptococci, (Dandekar et al., 2002), which have lost their cell wall. Mycoplasmas are therfore classed as gram- positive bacteria. This is supported by ribosomal RNA and DNA analysis.
Cite the purpose of following reagents in a differential staining procedure?
To distinguish between acid fast positive and acid fast negative bacteria. Acid fast positive bacteria will stain red to pink color and acid fast negative bacteria will stain blue. Acid fast positive bacteria have mycolic acid in their cell wall, which will stain with carbol fuchsin and not decolorize with acid alcohol. Acid fast negative bacteria do not have mycolic acid in their cell wall, and become decolorize with the acid alcohol. Counterstain of methylene blue needs to be done in order to see the acid fast negative.
Is Proteus Vulgaris acid-fast?
No, Proteus vulgaris is not acid-fast. Acid-fast bacteria retain the primary stain, carbol fuchsin, despite exposure to acid-alcohol decolorizer, while non-acid-fast bacteria do not retain the stain. Proteus vulgaris is a non-acid-fast bacterium.
