0
these media contain substances that accelerate the growth of required pathogens only and prevent or slow down the growth of other microorganisms.
example: XLD agar: it is used for the growth of salmonellae and shiggellae. the bile salts present in this media prevent the growth of many fecal commensals.
Wiki User
∙ 12y ago
Wiki User
∙ 10y agoSelective media is used to identify a certain species of bacteria by only having the nutrients that are necessary only for that particular species. If done properly, the bacteria which you are testing for should be the only one able to grow. For instance, if you were testing for gonorrhea, you would create a media where only gonorrhea can grow. If the sample grows, then you know that it's gonorrhea. If not, then it indicates that it's not gonorrhea.
Add your answer:
Earn +20 pts
Which type of culture media is best for the growth of most chemoheterotrophic organisms?
selective media
What selective growth media is best suited for isolation of coliform bacteria?
MacConkey's agar is a selective growth media that is best suited for isolation of coliform bacteria. This bacterial is red and is gram negative. The agar plate inhibits the growth of gram positive organisms and allows gram negative organisms to grow.
How does selective media works in microbiology?
Selective media, is made up of certain nutrients that can either inhibit or enhance the growth of certain bacteria and or fungus. This is why they call it selective media, it is generally only selective for one kind of bacteria or does certain things when that bacteria or fungus is present.
Why blood agar medium producing less contamination?
as it is a selective media for streptococci it inhibits the growth of other bacteria.
What is enrichment medium and how does it differ from differential and selective media?
Selective media is one that grows only certain microorganisms while inhibiting (or preventing) others from growing, that is to say , the media has certain chemicals that allow one organism to grow but another organism cannot grow with those ingredients in the media, thus, is selective for the organisms that can grow in that media. Therefore, most commonly grows only one type of organism. Differential media is one that distinguishes one microorganism from another, it can grow more than one microorganism, but depending on how each organism reacts to the media (like turns red) it differentiates from another microorganism. In this type of media if you are trying to distinguish between 2 types of microorganisms, both should grow but they will have different reactions to the media, and thru their visible reactions you can tell them apart (differentiate them).
Which type of culture media is best for the growth of most chemoheterotrophic organisms?
selective media
Is tryptone broth differential or selective media?
differential.
What is non selective media?
Non-selective is when we use agar for bacterial growth in general. Mean not to differentiate between them but just to see their colonies and growth. TSA and Chocolate agar are nonselective.
What selective growth media is best suited for isolation of coliform bacteria?
MacConkey's agar is a selective growth media that is best suited for isolation of coliform bacteria. This bacterial is red and is gram negative. The agar plate inhibits the growth of gram positive organisms and allows gram negative organisms to grow.
How does selective media works in microbiology?
Selective media, is made up of certain nutrients that can either inhibit or enhance the growth of certain bacteria and or fungus. This is why they call it selective media, it is generally only selective for one kind of bacteria or does certain things when that bacteria or fungus is present.
Why blood agar medium producing less contamination?
as it is a selective media for streptococci it inhibits the growth of other bacteria.
What is enrichment medium and how does it differ from differential and selective media?
Selective media is one that grows only certain microorganisms while inhibiting (or preventing) others from growing, that is to say , the media has certain chemicals that allow one organism to grow but another organism cannot grow with those ingredients in the media, thus, is selective for the organisms that can grow in that media. Therefore, most commonly grows only one type of organism. Differential media is one that distinguishes one microorganism from another, it can grow more than one microorganism, but depending on how each organism reacts to the media (like turns red) it differentiates from another microorganism. In this type of media if you are trying to distinguish between 2 types of microorganisms, both should grow but they will have different reactions to the media, and thru their visible reactions you can tell them apart (differentiate them).
Is the media for oxidase test selective or differential?
media used for oxidase test is non selective media
What is the principle of selective media?
Scientists in a lab use selective media and differential media to identify or isolate organisms. Selective media allows only certain types of organisms to grow.
What is the media selective for fungal organism?
potato dextrose agar medium is used for fungal growth
Is a tsa agar selective or differential?
its a selective media
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.
