What is "BHI" agar and what is it used for? What is "Sabouraud Dextrose" agar and what is it used for?

Q: Why Do not add more than 2 drops of copper sulfate in Biuret reagent?

A: There are several biochemical tests to identify the presence of protein in a sample. There are tests…

Q: What group of microorganisms is responsible for producing fermented beverages? What microorganism…

A: Fermentation is defined as the metabolic process in which yeasts, bacteria, or other microbes are…

Q: What aare Agrobacterium tumefaciens ? why they are used ?

A: BASIC INFORMATION  MICROBES  They are the unicellular organisms which can not seen by naked eyes…

Q: How can one distinguish E. coli from P.aeruginosa on nutrient agar? blood agar? EMB agar? What is…

A: Psuedomonas aeroginosa iscan aerobic organism that is motile, gram negative  , rod shaped bacteria…

Q: Why is mannitol salt agar (MSA) considered both a selective and differential agar for staphylococci?

A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…

Q: Which disinfectant is the most effective? and why? Which disinfectant(s) is (are) bactericidal? and…

A: Disinfectant A is most effective as  there is no growth of salmonella choleraesuis at dilution 1:2…

Q: The use of abomasum as a source of rennet is not practical. Explain why

A: Rennet is an enzyme or a substance that is produced as a coagulant and helps in the production of…

Q: What is the purpose of the crystal violet, bile salts, and neural red in MacConkey Agar media?

A: MacConkey Agar or MAC is a culture medium. It is a selective and differential medium designed for…

Q: Agar is a solidifying agent used in media preparation. What is its origin?

A: Agar gel is a polysaccharide which can become liquefied at temperatures ranges from 85°C to 90°C and…

Q: Why is picric and tannic acids used in treating burns and diarrhea?

A: Picric acid is a potent explosive that is a derivative of phenol. Picric acid is a chemical compound…

Q: What is Pasteurization?

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: What is the purpose of adding dishwashing liquid into the banana mixture? What reagent is used in…

A: DNA extraction is the method of isolation of genetic material ( DNA ) from plants , animals or any…

Q: discuss the clinical significance, principles, reagents (if any) and positive and negative results…

A: *Note: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts…

Q: Name the source from where agar-agar is obtained.

A: Agar-agar is a gelatinous substance that is formed by a combination of linear polysaccharide agarose…

Q: Which of the following media are selective, differential, and test for lactose fermenters? What is…

A: MacConkey plates are selective , differential and test for lactose fermenters.

Q: If each agar plate contained 20 ml of LB agar and had an ampicillin concentration of 150 ug/ml, what…

A: Given data:  Each plate contains-  LB agar=20ml Ampicillin= 150 micrograms per ml.  Amount of…

Q: Where should a label be written on an agar plate?

A: The aseptic technique is applied in a laboratory setup to reduce the risk of contamination. It…

Q: what is the culture media for Vibrio Cholerea?

A: ANSWER;- Culture media for Vibrio Cholera is a Laboratory Method for the Diagnosis of Vibrio…

Q: What bacteria grow on both a MacConkey agar plate and Mannitol Salt agar?

A: Selective media  The media is a kind of growth media which only allow the growth of a perticular…

Q: What is the pH indicator in the mannitol salt agar plate? O Bromcresol purple O Kovac's reagent O…

A: For isolating pathogenic staphylococci from samples, cosmetics, and microbial limit tests, Mannitol…

Q: What is the purpose of adding sauces of the sandwich?

A: Sauce is a liquid or semi-liquid substance served with food.

Q: How you can differentiate between Escherichia coli and Shigella on MacConkey agar?

A: The term “Culture media” defines the solid, liquid, or semi-solid design to assist the…

Q: What is tabacum used for?

A: Introduction: Tabacum is an extract of Nicotiana tabacum which is a herb plant and is an annually-…

Q: What types of bacteria are inhibited on MacConkey agar

A: MacConkey agar,  contains peptones, lactose, bile salts, NaCl, neutral red (pH indicator), and…

Q: Is colistin Naladixic acid agar selective and/or differential? Explain

A: C-CNA (Columbia-CNA Agar) is a form of selective media that favours Gram-positive bacteria.

Q: explain the various factors affecting agar-agar gels and what is the source, manufacturing, and…

A: Agar agar gel and its properties and uses.

Q: Why is NSS preferred over water in preparing fecal smear?

A: Introduction: Normal saline is a crystalloid liquid that is an aqueous solution of electrolytes and…

Q: If an esculinase-postive and an esculinase-negative bacteria species can both grow on the Bile…

A: Bile Esculin Agar  It is defined as the type of selective differential agar that's used to isolate…

Q: What is the most commonly used fixative in stool samples and why?

A: Fixative is a moist environment for transporting and preserving intestinal parasites in stool…

Q: What is the point of the pressure in the autoclave sterilization?

A: Autoclaves are the devices which are like pressure cookers and  used in laboratories that provide a…

Q: Agar is a complex polysaccharide obtained from seaweed and cannot be digested by most…

A: Growth media is the nutrients rich medium that helps in the growth of several bacteria and other…

Q: Why are amino acids solid at room temperature?

A: Since you have posted multiple questions, we solve the first question for you. To get the remaining…

Q: Do pure cultures have to be used in a chemostat?

A: Chemostat is a culture chamber where microorganisms are cultured under static environment. The…

Q: Other than the PYR test, what is another use of the PEP reagent?

A: PYR is a colorimetric method used to detect the presence of pyrolidonyl arylamidase activity in a…

Q: what is Rose Bengel Agar?

A: Rose Bengal Agar -  Rose Bengal Agar is selective medium it is used to detect and enumerates yeast…

Q: What are several microbial targets of pasteurization?

A: In the living world, we see a large number of microorganisms, animals and plants. These organisms…

Q: Why do we grow the bacteria in minimal media when testing for citrate utilization

A: Minimal media are those that provide the minimal nutrients possible for colony development, usually…

Q: What is the purpose of the different types of media (solid, semi-solid, broth)?

A: Culture medium is the medium consist of  mixture of nutrients and substances which are required for…

Q: List the ingredients and recipe (in gram or milligram) to make one liter (1000 ml) of Trypticase Soy…

A: A growth medium can be described as a solid, liquid or semi-solid substance used to grow various…

Q: How many different types of colonies can you find on the blood agar plate? describe each. (As shown…

A: Blood agar is general medium that is provided with the nutrients and can be use as a general growth…

Q: How is the CTSA (coconut tryptic soy agar plate) growth medium designed to meet the nutritional need…

A: TSA is a general-purpose plating medium that can be used to isolate, cultivate, and maintain a wide…

Q: Describe the appearance of coliforms on Levine EMB agar.

A: Coliform bacteria are found in a diverse range of places like waste products of animals, water…

Q: Why is sulfate (SO42-) added to a Winogradsky column?

A: Winogradsky developed the columns as a means of enriching sediments and soils for microbes.…

Q: What is a starter culture and what is its purpose? What are the characteristics of a good starter…

A: STARTER CULTURE:- Starter culture are those microorganisms that are used in the production of…

Q: what practical importance are air borne microorganisms to the laboratory workers?  What precautions…

A: Laboratories are the areas where lot of experiments and research is performed. It deals with lot of…