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Which gram positive bacteria grows on macconkey and EMB?
Gram + bacteria do NOT grow on EMB agar, EMB agar inhibits their growth, and is selective for Gram -
Which is strong acid water or phenol?
Both water and phenol are very weak acids. Though phenol is the stronger of the two.
Why cant you use the same selective and differential media for staphylococci and streptococci?
Selective and differential media are designed to support the growth of specific types of bacteria while inhibiting the growth of others. Staphylococci and streptococci have different nutritional and metabolic requirements, so a single selective and differential media may not provide the necessary conditions for both types of bacteria. Each type of bacteria may require specific nutrients, pH levels, or antimicrobial agents for optimal growth and differentiation, which cannot be provided by a single media formulation.
Is a blood agar selective or differential?
Blood agar is a bacterial growth medium which contains 5% sheep's blood. It is considered to be differential but not selective, because it is an enriched medium that provides a rich nutrient environment for many types of bacteria, while a selective medium supports the growth of certain types of bacteria but inhibits other types. Blood agar is considered differential because it is used to distinguish pathogenic bacteria based on the effect of bacterial enzymes known as hemolysins which lyse red blood cells. Blood agar is mainly used clinically to detect the presence of Streptococcus pyogenes, the human pathogen which causes "strep throat". Blood agar can be made selective by the addition of other ingredients.
What are the similarities and differences between Natural Selection and Selective Breeding?
The similarity between natural selection and selective breeding is that they both produce changes in plants and animals.
Is Mannitol salt agar a selective or a differential medium?
Both
Why can mannitol salt agar and EMB agar be described as both selective and differential media?
it is selective because only a salt tolerant can grow. 7.5 nacl it has diffrential properties also. if mannitol formentors turns yellow staphlococus aureus; but if it has no change then its a nonpathogenic staphlococci (s. edermis)
How could the use of a medium which is both selective and differential be justified?
The use of a medium that is both selective and differential can be justified in a few ways. They allowe the growth of organisms that can be of interest. The media can also be quite useful diagnostically in medical settings.
Which gram positive bacteria grows on macconkey and EMB?
Gram + bacteria do NOT grow on EMB agar, EMB agar inhibits their growth, and is selective for Gram -
Is TSA selective or differential media?
Selective media favor the growth of particular microorganisms. Bile salt or dye like basic fuschin and crystal violet favor the growth of gram-negative bacteria by inhibiting the growth of gram positive bacteria. Maconkey agar is widely used to grow E.coli and related bacteria. Differential media are media that distinguish among different groups of microbes and even permit tentative identification of microorganisms based on their biological characterstics. Blood agar is used to culture of bacteria from human throat. Mckoney agar is both differential and selective media.
Which is strong acid water or phenol?
Both water and phenol are very weak acids. Though phenol is the stronger of the two.
Why cant you use the same selective and differential media for staphylococci and streptococci?
Selective and differential media are designed to support the growth of specific types of bacteria while inhibiting the growth of others. Staphylococci and streptococci have different nutritional and metabolic requirements, so a single selective and differential media may not provide the necessary conditions for both types of bacteria. Each type of bacteria may require specific nutrients, pH levels, or antimicrobial agents for optimal growth and differentiation, which cannot be provided by a single media formulation.
Is emb a defined medium?
EMB is an undefined selective/differential medium. It contains aniline dyes (methylene blue and eosin), which inhibit the growth of Gram-positive bacteria selecting for Gram-negative bacteria. EMB also contains lactose which makes the media differential based on an organisms ability to ferment lactose.
Why NAOH reacts with Phenol while KOH doesn't?
They both react with phenol. KOH is actually a slightly stronger base than NaOH. At low concentrations, like less than 0.1M, both NaOH and KOH are essentially 100% dissociated. However, at higher concentrations, a little more of the KOH is dissociated. The point is, both bases will remove virtually all of the H+ from phenol. You received some incorrect information.
What are the results for Pseudomonas aeruginosa in phenol red broth?
Negative for both. Pseudomonas does not ferment sugars.
What is the purpose of phenol red or bromcresol purple in fermentation tube?
These are both used as pH indicators.
Why Pesticides and cancer drugs are both created by?
Selective breeding
