Glucose or glycerol are often used as carbon sources, and ammonium salts or nitrates as inorganic nitrogen sources. This was highly useful. These media are synthesis according to the need of bacteria. Thanks you very much.pls what are the methods of inoculation of pure culture . What is another name for basic culture media, which one is the strongest, type of culture, How wonderful text,as its so clear&understandable since it speaks only about facts which is provable experimentally so congratulations to the producers of the text also its better to provide the significance of one over the other, am so grateful my studies is going well am even learning more better thank u, Am grateful . Cant wait to do best in my next exam. Culture is a cultivated behaviour passed along with and without any conscious thought from one generation to the . Nutrient Broth has the same formulation as Nutrient Agar, only agar has been omitted (which causes the medium to solidify at room . The culture media (nutrients) consist of chemicals which support the growth of culture or microorganisms. Thus, the composition of a medium is formulated considering the specific requirements of a given culture system. Media can be a solid or a liquid and many different types exist based on its general uses in laboratory settings. The solid culture media is composed of a brown jelly-like substance known as agar. It is usually highly selective, being created for the growth of a specific microbial. Also, you can categorize them according to the nature of the raw material. For example, if a microorganism is resistant to a certain antibiotic, such as ampicillin or tetracycline, then that antibiotic can be added to the medium in order to prevent other cells, which do not possess the resistance, from growing. Types of culture media based on chemical composition/application 1. Culture media is a source of nutrients and growth factors required for the growth of microorganisms and even plants in laboratory conditions. Eg: Robertsons cooked meat medium, Thioglycolate medium. There are five common. So that You can easily access information about your "What are the 10 types of media" search query by clicking on the most relevant link below. i think something is missing you need me ,,. social media and the use of the internet). so this also called defined media because that contains all defined nutrient. methylene blue Culture media contain nutrients, energy sources, growth-promoting factors, minerals, metals, buffer salts, and gelling agents (for solid media). Here, we will discuss microbiological cultures used for growing microbes, such as bacteria or yeast. Media culture, with its declinations of advertising and public relations, is often considered as a system centered on the manipulation of the mass of society. Based on Oxygen requirement - Aerobic media - Anaerobic media Solid media contains 2% agar Colony morphology, pigmentation, hemolysis can be appreciated. A culture media is a special medium used in microbiological laboratories to grow different kinds of microorganisms. Culture media contains the nutrients needed to sustain a microbe. If the number of species is two or more, then they speak of a mixed culture. The 10 best queer movies and shows of 2022, from 'Euphoria' to 'Tr' - The Washington Post. Labari Anzaku. thank you very much, i have been looking for this untill today. Usually a fair amount of information must be known about the microbe to determine its minimal media requirements. Culture media or growth media is a liquid or gel support media provided with essential nutrients and growth parameters required for the growth of microorganisms. Mary Trump is the exception in a family famously focused on . The culture media is growth regulatory sunstances that provide nutrients for the growth and development of microorganisms outside their natural habitat, such as fungi and bacteria. Different nutrients and chemicals are added to it to allow the growth of various microorganisms. i use not to understand this types of culture even after attending lectures but through this short and easy to understand notes am able to explain to someone. Culture is a term that refers to a large and diverse set of mostly intangible aspects of social life. type culture: [ kulcher ] 1. the propagation of microorganisms or of living tissue cells in special media conducive to their growth. Various approaches to make a medium selective include addition of antibiotics, dyes, chemicals, alteration of pH or a . Selective media Used for the growth of only selected microorganisms. Pages: 5. An isolation culture medium is a simple agar-containing solid medium that allows the growth of microorganisms in the direction of the streaks. If the same bacteria is then placed in a medium consisting of histamine, it will start to grow again. This page titled 6.3A: Culture Media is shared under a CC BY-SA 4.0 license and was authored, remixed, and/or curated by Boundless. For this, it is more convenient and informative to use synthetic media. Culture media are chemical preparations consist of nutrients necessary for microorganisms to grow and multiply, allowing their study and analysis. The main components of any nutrient medium are compounds of carbon and nitrogen. Some Fundamental Definitions Types of Data (Variables Definitions, Aspects and Characteristics of Culture, Types of Epidemilogy Studies - Introduction to Biology - Lecture Slides. Plant tissue culture is the in-vitro aseptic culture of cells, tissues, or whole plants under controlled nutritional and environmental conditions, often to produce clones of plants. 2023 The Arena Media Brands, LLC and respective content providers on this website. Nutrition - the presence of all nutrients. According to the composition of the nutrient media are divided into: According to the intended purpose, nutrient media are divided into: According to the physical state, nutrient media are divided into: YB STUDY is an Indias largest Online learning website offers learning for classes 1 to 12 and competitive exams like NEET, JEE, Olympiads, NTSE, KVPY, State boards etc. A culture of microorganisms, consisting of cells of the same species, is called a pure culture. 1). Indicator or differential media 6. newspapers and magazines), television and radio.. mz. cluster of microorganisms growing on the surface of a solid medium, presumably cultured from a single cell Agar Used for preparing solid medium Obtained from seaweeds (Red algae) No nutritive value Not affected by the growth of the bacteria. Nutrient broth. These media contain all the elements that most bacteria need for growth and are non-selective, so they are used for the general cultivation and maintenance of bacteria kept in laboratory-culture collections. Selective media are designed to inhibit unwanted commensal or contaminating bacteria and help to recover pathogen from a mixture of bacteria. Murtala muhammad idris,gwaram, jigawa state. | indicator strip This is an important distinction between growth media types. It has helped me cut down on my stress in preparation for my exams. Culture media are the basis of microbiological work, and their quality often determines the results of the entire study. Essay Sample Postfeminist media culture refers to the ways in which media texts and practices reflect and shape contemporary understandings of gender. Principles involved in construction of culture media - Construction of a cultural medium requires consideration of following criteria. Scanday. [5] Corporate media "are used primarily to represent and reproduce dominant ideologies." [6] Prominent in the development of this perspective has been the work of Theodor Adorno since the . Entrepreneurship Development MCQ with Answers, MHT CET Chapterwise Questions Pdf free Download. For inoculum preparation, Blood culture, for the isolation of pathogens from a mixture. For the cells of most plants can be grown in a culture media. By appropriate procedures they have to be grown separately (isolated) on culture media and obtained as pure for study. There are many different types of media that can be used to grow specific microbes, and even promote certain cellular processes; such as wort, the medium which is the growth media for the yeast that makes beer. Storage media Types of culture media based on oxygen requirement 1. Legal. Examples of commonly used selective media include PALCAM agar medium or Mac conkey agar medium. When Donald Trump's niece keeps spilling the beans, the mess left on the kitchen floor creates a stench that not only affects the whole household, but reveals a lot about the evolution of America's political and media culture. For microorganisms, it provides trace elements and vitamins required by the microbe and especially a defined carbon and nitrogen source. Simple media CULUPURD AVC5 DEMOS OID Culture media are designed for rapid microbial growth, and little or no product accumulation will normally occur. A nutrient medium in microbiology is a medium containing various compounds of complex or simple composition, which are used for the reproduction of bacteria or other microorganisms in the laboratory. The cells can be of a mixed, heterogeneous origin with different cell types growing, or they can be a singular cell type, sometimes clonal in origin. and more Bacteriology Slides in PDF only on Docsity! may lord answers my prayers amen. Culture media can be defined as the environment from which the organisms satisfy entire nutritional requirements for growth. It offers the selected microorganisms sources of carbon, nitrogen, minerals, and other helpful growth factors like vitamins and amino acids. Basically, the plant tissue culture media should contain the same nutrients as required by the whole plant. There is a huge variety of these media and they are used in laboratory analysis and scientific studies in several areas, mainly in food, water, cosmetics and clinical microbiology. Download culture media definition and types. Anaerobic media Types of special purpose culture media 1. But they are rarely used to study the physiology of metabolism, since their composition is complex and unstable. on October 14, 2018: Thanks May Almighty Allah bless you,cause it's helpful for students. NUTRIENT BROTHS AND AGAR PLATES Semisolid media ( Agar, 0.2-0.4% which enables motile bacteria to spread.) bacteria, Thank you so much this topic is very helpful for my exam prepartion. Requirements chiefly depend on the type of microorganism being used in the fermentation process. Minimal media Media that contains the minimum nutrients possible for colony growth, generally without the presence of amino acids, and are often used by microbiologists and geneticists to grow wild type microorganisms. Culture means simply the "way of life" of a people or their "design for a living.". Media culture is a society or culture that has been heavily influenced by mass media whereby communication occurs instantly across massive populations. They are also termed growth media. Isma'il Yusuf Nayaya on October 24, 2018: My GOD increases me to become like all microbiologist. The turbidity of the growth medium is measured by an optical device. Study with the several resources on Docsity, Prepare for your exams with the study notes shared by other students like you on Docsity, The best documents sold by students who completed their studies, Clear up your doubts by reading the answers to questions asked by your fellow students, Earn 10 points for each uploaded document and more additional points based on the downloads get, Get download points for each document you share, Help other students and earn 10 points for each answered question, Earn Premium Points for no-holds-barred downloads of shared documents and Store documents, Connect with the world's best universities and choose your course of study, Ask the community for help and clear up your study doubts, Discover the best universities in your country according to Docsity users, Download our free guides on studying techniques, anxiety management strategies, and thesis advice from Docsity tutors. Melts at 95 o C & sets/cools at 42 o C 2% agar is employed in solid medium. While selective media are agar based, enrichment media are liquid in consistency. A postgraduate student. Some organisms, termed fastidious organisms, need specialized environments due to complex nutritional requirements. Downloads: 0. . The general purpose media is a non-selective media that supports a large variety of microorganismic growth. Nutrient broths and agar plates are the most typical growth media for microorganisms. Media is incorporated with inhibitory substances to suppress the unwanted organism. In this case, the media containing histamine will act as resuscitation media. In animal cell culture, there are two common types of cell culture that are used, or broadly divided into two categories; natural media or natural medium and artificial cell culture medium. These agar plates provide a solid medium on which microbes may be cultured. Which are listed below. Special media Enriched media Enrichment media Selective media Indicator media Differential media Transport media III. Culture media can vary in many ingredients allowing the media to select for or against microbes. Two types of media with similar implying names but very different functions, referred to as selective and differential media, are defined as follows. The medium necessary for the in vitro growth of microorganisms interferes with their development. The success of the plant tissue culture depends on the choice of the nutrient medium. Kluckhohn and Kelly define it in his sense", A culture is a historically derived system of explicit and implicit designs for living, which tends to be shared by all or specially designed members of a group.". Based on physical state I. Chemostat Turbidostat : In turbidostat, the basic approach for obtaining continuous culture is by maintaining uniform turbidity or cell density in the growth tube. Enrichment media 5. These are often mixed with agar and poured into Petri dishes to solidify. The selective and differential culture media are opposites to each other in a way that one inhibits the growth of other organisms while allowing the growth of some, while the other does not kill the others but only highlights one type. In vivo - When the study involves living biological entities within the organism. in this include two types of media first is serum media and other is Allows growth of aerobes, anaerobes and facultative anaerobes. The Trump Dynasty is as Dysfunctional as the Windsors. They are used for diagnostic tasks, isolation and study of pure cultures of microorganisms, obtaining vaccines and drugs, and for other biological, pharmaceutical and medical purposes. Nutrient media is used to determine the cultural and enzymatic properties of microbes. The percentage of agar used determines the consistency of the medium. When developing an enrichment culture, the scientist stimulates the growth of specific microorganisms by thoughtfully creating conditions in the culture that best help the selected microorganisms to grow. Aerobic media 2. Contains 0% agar. Used to keep the bacteria for long time (6 months or more). Solid media On the basis of presence of molecular oxygen and reducing substances in the media I .Aerobic media and II. A culture medium is a solid or liquid preparation used to grow, transport, and store microorganisms in vitro. Different types of culture media according to physical state. III. ADVERTISEMENTS: 2. Deep agar: agar solidified at bottom of tube. Types of culture media. This is a media used to differentiate between bacteria by using an identification marker for a specific type of microorganism. Thioglycollate. Qudsia imtiaz raja on September 25, 2019: Tnx allot this is very helpful to me,I really appreciate. Types of culture media Media are of flowing types. Liquid media Turbidostat 2). Viruses, for example, are obligate intracellular parasites and require a growth medium containing living cells. Bacterial culture media can be classified in at least three ways; Based on consistency, based on nutritional component and based on its functional use. They remain solid, as very few bacteria are able to decompose agar. Learning Objectives Compare selective and differential media There are many types of media used in the studies of microbes. This is as opposed to "old media", which refers to traditional forms of media, such as print media (e.g. Culture medium or growth medium is a liquid or gel designed to support the growth of microorganisms. As a result of the EUs General Data Protection Regulation (GDPR). Without wort in certain conditions, fermentation cannot occur and the beer will not contain alcohol or be carbonated (bubbly). Most studies involving microorganisms depend on their in vitro development capacity and this is only possible by creating an adequate environment for their growth. It may be noted that plants in nature can synthesize their own food material. | Omdurman Ahlia University | about culture media definition and types.. Anaerobic media Types of special purpose culture media 1. This content is accurate and true to the best of the authors knowledge and is not meant to substitute for formal and individualized advice from a qualified professional. Views: 10. Eg: Selenite F Broth for the isolation of Salmonella, Shigella Alkaline Peptone Water for Vibrio cholerae Potassium Tellurite media LJ media Indicator media These media contain an indicator which changes its colour when a bacterium grows in them. They are used for the cultivation of microorganisms.Principles involved in construction of culture media -Construction of a cultural medium requires consideration of following. Enriched media 3. 3 Examples of liquid medium. Brain heart infusion. There are many ways to stimulate growth, and different microorganisms can be cultivated in vitro, including viruses, bacteria, fungi and protozoa. This is an undefined medium because the amino acid source contains a variety of compounds with the exact composition being unknown. Culture media can be defined as the environment from which the organisms satisfy entire nutritional requirements for growth. Types of culture media based on chemical composition/application 1. Media also used to determine the resistance of microbes to chemical, biological and physical factors. Regardless of how old your children are or how many children you have, there are five types of rules all kids need. The basic nutrient broth is the most commonly used. This type of media is used for the detection and identification of microorganisms. It is very useful for my exam. 30 Dec 2022. Plate: used mostly to culture organisms, and to get pure culture of bacteria (isolated colony). There are different types of media suitable for growing different types of cells. From Nigerian on February 05, 2020: Regularly our prayers may Allah is add us tellently interligent in our brain also he give us knowledge for the blesses how to help our communities with it. Identify 3 other classes vof growth medium microbial culture from general purpose medium pls some one should explain it better for me. on September 20, 2019: Pls i want to know which one is the stronges among d types of culture media?. Transport media 7. Scientists differentiate between microorganisms in the culture by adding certain chemicals or dyes that the microbial have varied reactions to. A culture medium is basically an aqueous solution to which all the necessary nutrients have been added. Nutrient media A source of amino acids and nitrogen (e.g., beef, yeast extract). The isolation of microorganisms is one of the main and basic techniques in microbiology. Essentially, cell culture involves the distribution of cells in an artificial environment (in vitro) which is composed of the necessary nutrients, ideal temperature, gases, pH and humidity to allow the cells to grow and proliferate. We provide aggregated results from multiple online sources and sorted by user interest. Eg: Blood agar Mac Conkeys medium Christensens urease medium Urease medium Transport media Media used for transporting the samples. Each type of culture medium is indicated for a certain function and a specific microorganism: some have the function of nourishing and stimulating growth, others inhibit a certain microorganism and are able to indicate its hydrogenic potential. Culture medium or growth medium is a liquid or gel designed to support the growth of microorganisms. Culture is a Way of Life. A) Liquid media: These are available for use in test-tubes, bottles or flasks. cells, tissues, organs, protoplasts. Types of Culture Media: The first medium prepared was meat-infusion broth. about culture media definition and types. NUTRIENT BROTHS AND AGAR PLATES CULTURE MEDIA & CULTURE METHODS. For example, the bacteria will only grow on the pattern made on the solidified agar during the streak plate method. Isolated microorganisms is used to study their physical, biological and chemical properties. Semi-solid medium. Social networking and social media are overlapping concepts, but social networking is usually understood as users building communities among themselves while social media is more about . What's the 5 bacteria act as antibiotics, thanks so much its very helpful and easy to understand, Thank you very much this page very helpful, it was really helpful and easy to understand. Five types of growth cultures can be used in the indication of cultural characteristics of bacteria in this practice: Agar plate culture, nutrient agar slant culture, nutrient broth culture, fluid-thioglycolate culture, and gelatin deep culture. Glucose or glycerol are often used as carbon sources, and ammonium salts or nitrates as inorganic nitrogen sources in culture media. Meaning of Culture Media: Media requirements depend on the type of microorganism being used in the fermentation process, but the basic requirements remain the same, which includes: (a) Source of energy (b) Water, carbon source (c) Nitrogen source (d) Vitamins (e) Minerals. There are many different formulations available to suit the differing nutritional needs of bacterial species. Journalism, mass media and communication. Every organism has different nutritional requirements based on its habitat or living conditions. Note: Here, please keep in mind that there are so many different ways to categorize culture media.Like, You can simply categorize media according to their function and use. A growth or a culture medium is composed of various nutrients that are essential for microbial growth. The particular species of the plant. 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Here, we will discuss microbiological cultures used for growing microbes, such as bacteria or yeast. Basal media 2. Neighbors went to assist and offer first aid as they awaited first responders. Selective media 4. Words: 856. Verious kinds of nutrient media is used for biosynthesis of products by fermentation process. Culture medium or growth medium is a liquid or gel designed to support the growth of microorganisms. Bacteria have to be grown (cultured) for them to be identified and subsequent clinical diagnosis. Many microbes can also be grown in liquid cultures comprised of liquid nutrient media without agar. Two methods are used for obtaining continuous culture. For the isolation of microorganisms requires special substrates called nutrient media. Culture is a broad term that refers to social norms and behaviour prevalent in human society. Different types of culture media in microbiology The microbiology laboratory has SEVEN types of culture. This is a special type of media used to grow microorganisms that are damaged and have lost the ability to produce due to certain harmful environmental factors. On the media, microorganisms carry out all life processes (feed, breathe, multiply, etc. Selective media are used for the growth of only selected microorganisms. These media are important for bacteria growth in the micro lab. When autocomplete results are available use up and down arrows to review and enter to select. comrade ahmad jamilu on November 20, 2019: thanks I'm really happy because I was get more knowledge about culture media and also known some classification and their functions.thank you. The type of medium you choose will depend on the purpose of the culture. Rich, nutrient or complete media can be helpful when trying to bulk up a pure culture and get the bacterial cells in good condition. The composition of the culture media is primarily dependent on two parameters: 1. Blood agar is a common differential culture medium used to identify bacteria that causes haemolysis in blood. Indicator or differential media 6. Drx, diwakar jaiswal on December 11, 2018: Olajide Abdquadri Olabamiji on November 18, 2018: First of all thank you very much for sharing incredible knowledge, and I'm going to request you to please update that the deference between Gram positive and Gram negative organism. Used as transport media, and for motility and biochemical tests. Assay media Enriched media 3. Enrichment media 5. Depending on the type and combination of nutrients, different categories of media can be made. It is recommended in many standardized methods of analysis of foods, dairy products, water and other products. Many human microbial pathogens also require the use of human cells or cell lysates to grow on a media. student of Lira med. The site owner may have set restrictions that prevent you from accessing the site. These are the most common growth media, although specialized media are sometimes required for microorganism and cell culture growth. Here, we will discuss microbiological cultures used for growing microbes, such as bacteria or yeast. Officials received the call about at 8:50 a.m. but were not able to reach Renner for 40 more minutes because weather . Transport media 7. There are different types of media suitable for growing different types of cells. The LibreTexts libraries arePowered by NICE CXone Expertand are supported by the Department of Education Open Textbook Pilot Project, the UC Davis Office of the Provost, the UC Davis Library, the California State University Affordable Learning Solutions Program, and Merlot. Liquid media II. Anaerobic media Based on nutritional factors Download Slides - culture media definition and types. Its really helpful to students, Where are the other types of medium i-e M6,B5,N5 etc?Please tell me about them this is my topic, How would you design simple cultural media for the growth of? These few examples of general media types provide some indication only; there are a myriad of different types of media that can be used to grow and control microbes. The technique primarily relies on plant cells' totipotency which is the capacity of a single cell to express the whole genome during cell division. Trypticase Soy Broth. Semi-solid media: Contains less agar than solid media (0.5% agar). Differential media Also known as indicator media, are used to distinguish one microorganism type from another growing on the same media. Different types of bacterial growth on these media are used in the indication of cultural . According to sociologists, culture consists of the values, beliefs, systems of language, communication, and practices that people share in common and that can be used to define them as a collective. Requested URL: byjus.com/biology/classification-of-culture-media/, User-Agent: Mozilla/5.0 (iPhone; CPU iPhone OS 15_5 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) GSA/219.0.457350353 Mobile/15E148 Safari/604.1. For example, if we want to isolate a specific bacteria, lets say one that can withstand an acidic environment from a sample of pond water, and get rid of others, a selective media with a low pH will be taken. Different cell types are grown in various types of medium. Eg: SIM (Sulfide indole motility (SIM) medium ) Solid media Liquid media Semi solid medium Enriched media Substances like blood, serum, egg are added to the basal medium. Eg: Stuarts medium non nutrient soft agar gel containing a reducing agent Buffered glycerol saline enteric bacilli Anaerobic media These media are used to grow anaerobic organisms. Surayya maina. Thanks very much. It is usually used for enumeration and isolation, but by definition it has a multiple effect, meaning it can be used as a selective, deferential or resuscitation media. Read on to learn about 8 different types of culture media in microbiology. Since there are many types of microorganisms, each having unique properties and requiring specific nutrients for growth, there are many types of culture mediums based on what nutrients they contain and what function they play in the growth of microorganisms. A microbial culture medium is a mixture of substances that promotes and supports the growth and differentiation of microorganisms. What are the six types of media. Nutrient Broth is a medium widely used for the culture of undemanding microorganisms. Culture medium is also known as growth media or nutrient media. These media can also be used to select for or against the growth of specific microbes. It was very easier for me to understand, i like so much to study microbiology especially culture session, Thanks for your assistance we really appreciated. in the nutrient component of synthetic media include vitamins, carbohydrate, amino acids, trace elements, antibiotics, and some other nutrients. kudos to you all! The most common growth media nutrient broths (liquid nutrient medium) or LB medium (Lysogeny Broth) are liquid. Media is used for storage of cultures for long term use. Eg: Nutrient broth Semi solid medium 0.5% agar. The Arena Media Brands, LLC and respective content providers to this website may receive compensation for some links to products and services on this website. Each media has a different composition. A defined medium will have known quantities of all ingredients. Touch device users, explore by touch or with swipe gestures. woooww! A culture may be solid or liquid. Basal media 2. Cell Culture Definition Cell culture is a method used to cultivate, propagate and grow a large amount of cells in a dish. Definition. Solid Medium Solid culture media contain agar at a concentration of 1.5-2.0% or some other primarily inert solidifying agent. Assay media This is composed of all the basic nutrients required for microbial growth and is used to preserve a specific type of microorganism, preferably bacteria or a set of different microbial entities, for a long period of time. synthetic media prepared by adding nutrients in the lab. Culture is a word for the way of life of groups of people, the behavior, beliefs, values, and symbols that they accept, generally without thinking about them, and that passed along by communication A growth or a culture medium is composed of various nutrients that are essential for microbial growth. ), also called culture media. A culture medium is a solid or liquid preparation used to grow, transport, and store microorganisms in vitro. Accessibility StatementFor more information contact us atinfo@libretexts.orgor check out our status page at https://status.libretexts.org. It is usually composed of bacteria taken from a liquid source such as pond water. This represents a dramatic and relatively recent shift from traditional cultures that were formed with a process of person-to-person communication. Eg: Nutrient agar, Blood agar Liquid media no agar. The new media are those types of media that use digital technology (e.g. Microbes can use the nutrients of culture media as their food is necessary for cultivating them in vitro. This culture allows the organisms to regain their metabolism by providing the nutrients that the organisms had been deprived of. Sample 1 Based on 1 documents Save Copy Remove Advertising Examples of Culture Media in a sentence Differential Media | Selective Media | Complex and Defined Media Culture media are divided into three types; solid medium, semi-solid medium, and liquid medium, based on consistency. +1 (585) 438 02 31 . 1). A growth medium or culture medium is a mixture of nutritive substances that support the growth and multiplication of microorganisms. (PDF) Culture Media and Methods Culture Media and Methods Authors: Upasana Bhumbla Adesh Institute of Medical Sciences and Research Content uploaded by Upasana Bhumbla Author content Content. Culture media is a gel or liquid that contains nutrients and is used to grow bacteria or microorganisms. iN MICROBIOLOGY This will allow the growth of only those organisms that can withstand acidity and kill the others that cannot. Eg: Blood agar, Chocolate agar Blood agar Chocolate agar Enrichment media Liquid media used to isolate pathogens from a mixed culture. 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