explain methods for cleaning beans using flat bed screen and drum spray cleaner
Q: Which concentration of alcohol is the most effective germicide?a) 100% b) 75% c)…
A: The agent used to kill microorganisms or germs is called germicide. Germs can be microscopic…
Q: Agar is a solidifying agent used in media preparation. What makes it ideal for cultivation of…
A: Agar is a natural polysaccharide. It is mostly used in the lab and acts as a solidified agent. It…
Q: how foods are lyophilized and compare the advantages and disadvantages
A: Freeze drying also known as lyophilization is a method by which water is removed from frozen…
Q: Explain the purpose of thiosulfate in the medium.
A: Culture media is used to enrich the number of bacterial growth, to select certain bacteria and…
Q: Explain why a green metallic sheen is formed when E. coli is grown on Eosin Methylene Blue Agar.
A: Escherichia coli is the gram negative bacteria.
Q: List the two main types of culture media and how each differs and the types of microbes which grow…
A: Culture media contains all the elements which the bacteria needs for growth and is not selective in…
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: Explain the difference between sterilization, disinfection, antisepsis, pasteurization? Give…
A: Microorganisms are present everywhere. They are not visible with naked eyes but are present at…
Q: State the raw materials for the preparation of sufu ( soybean curd
A: soy curd is healthy and a very good source of protein, B vitamins and minerals.
Q: attern used to inoculate agar slant to get luxuriant culture. This pattern increases the surface…
A: Slant culture : A culture made on the slanting surface of a solidified medium in a test tube that…
Q: What is differential medium and differential media? Explain the difference ?
A: Difference between differential medumium - .- A differential medium support the expansion of any…
Q: Describe how to measure the effectiveness of a chemical disinfectant.
A: A chemical liquid or a substance that is used to kill microbes is referred to as a disinfectant.…
Q: Why should culture media after inoculation be incubated at an optimal temperature immediately?
A: Culture media, also called as growth media, are particular combinations of nutrients and other…
Q: Name and explain the culture media that can be used for cultivating non-specific and specific…
A: a) nutrient agar & tryptic soy agar, & brain heart infusion agar are culture media that can…
Q: What is the principle behind sterilizing media before use and before disposal
A: Microorganisms may be beneficial or harmful. The harmful microorganism causes many infections which…
Q: Show a concept map about the aseptic technique on Transfer from Broth to Broth Culture, Transfer…
A: Aseptic techniques or sterile techniques are procedures that ensure proper handling and conduction…
Q: give one reason why is it necessary to keep stirring the agar medium mixture in a beaker when…
A: Agar is a heteropolysaccharide, which is composed of different carbohydrate units. Agar is obtained…
Q: What microorganisms, specifically, could contaminate the yogurt sample?give at least five (5) do's…
A: Microorganisms play an important function in the ecology. The phrase "microorganism" refers to…
Q: Produce vinegar using rice
A: Vinegar is an aqueous solution of acetic acid and trace chemicals including flavorings. Vinegar…
Q: List five essential procedures of the aseptic technique when transferring a broth culture to another…
A: The term "aseptic method" refers to a combination of medical practises and procedures that help…
Q: Heat-labile material to be introduced to culture medium was filtered using membrane filters with…
A: given that the heat labile material which is introduced to culture media is filtered using a…
Q: What is differential medium
A: Differential medium or indicative media contain compounds which support the growth of microbes and…
Q: Define disinfection. Compare/contrast it with sterilization, antisepsis and bacteriostasis.
A: Sterilization, disinfectant, antisepsis and bacteriostatic all terms are related to halt the growth…
Q: Describe the growth as it appears in the Broth Tube or Agar Slant.
A: Microbes are cultured for scientific and research studies on various media. This enables us to know…
Q: WHAT IS THE TYPE OF Growth patterns on Agar Slant and Broth Medium
A: Growth and morphogenesis of plant is determined by the composition of culture media. There are few…
Q: explain indole test, startch test and citrate test.
A: Indole test This is a biochemical test that is used to identify the capability of some bacteria to…
Q: Using aseptic techniques, list the general procedure of inoculating a broth from a plate culture.
A: Aspetic techniques that you should follow during inoculating a broth from a plate culture are:…
Q: What summary can be drawn from the stab slant and surface inoculation.
A: A growth medium is intended to promote the growth of a variety of microorganisms or cells by the…
Q: What is the main difference between plates before and after centrifugation? What may be the purpose…
A: Answer: CENTRIFUGATION = It is the process involving mechanical force that is centrifugal force,…
Q: Differentiate between defined and complex culture media
A: To differentiate: Chemically defined and complex culture media
Q: Agar is added to media.
A: Agar is obtained from algae. It is composed of agarose (polysaccharide) and agaropectin. It is a…
Q: Distinguish the difference between a sterile media plate and a contaminated media plate.
A: streaking is a method to extract pure culture organisms from a different population of…
Q: Explain the rational of using saponification-solvent extraction to extract pyrene from milk
A: Asked : Rational of using saponification-solvent extraction to extract pyrene from milk
Q: Why should you filter some liquids for sterilization, rather than autoclaving them?
A: To control microbial growth or contamination there are a number of aseptic techniques developed that…
Q: Explain the effect that environmental factors exert on the growth and development of an algal batch…
A: The growth and development of algae is controlled by various environmental factors. This includes,…
Q: In a tabulated form, differentiate the physical and chemical methods of sterilization.
A: The microbiological technique that is performed for the removal, killing, or deactivation of…
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: Which is more Suitable for long-term storage: agar slant or plate? Explain why?
A: In order to isolate the bacteria from samples, they need to be inoculated into a growth medium which…
Q: Is the mannitol salt agar (MSA) a complex or defined medium? Explain based on Composition. What kind…
A: The selective ingredients of MSA the bile salts and the dye, crystal violet which inhibit the growth…
Q: List 5 other methods of sterilization and describe the principle/s and when each method is used.
A: (Please note that, you provided more than one question, I can only answer one question at a time,…
Q: Explain why desiccation and cold are not reliable methods of disinfectionbut how they can still be…
A: Sterilization is a technique that removes, kills, or deactivates all forms of life and other…
Q: Elaborate on the advantages of examining colony in an agar plate.
A: An agar plate is a Petri dish which have a development medium set with agar, utilised to culture…
Q: Define the meaning of Surface sterilization of explants Surface sterilization of explants
A: Plant tissue culture is very helpful technique in which plants are grown in in vitro condition and…
explain methods for cleaning beans using flat bed screen and drum spray cleaner
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- Explain the rational of using saponification-solvent extraction to extract pyrene from milkUsing aseptic techniques, list the general procedure of inoculating a broth from a plate culture.Can culture media be sterilized in the hot air sterilizer? Why or why not? (Answer in not more than 5 sentences)
- Explain why it is important to use only a small amount of bacteria when preparing a smearAside from application of heat, name other methods of sterilization and give examples of materials sterilized in each methodWhat is the physical appearance (solid, liquid, semi-solid) of following media:Agar deep tube
- Why should caps of glassware be loosened first before sterilization? [Answer in not more than 2 sentences]Discuss in detail how you would prepare this solution using any of the standard laboratory equiment listed in the table aboveIdentify the method of sterilization/ chemical agent described At 15psi, the temperature reaches 121 degree Celsius requiring only 15 to 20 minutes to sterilize the material. The material to be sterilized is exposed to live steam for 30 minutes for 3 consecutive days.
- Other than the application of heat, name other methods of sterilization. Define the methods and give examples of materials sterilized in each method.give one reason why is it necessary to keep stirring the agar medium mixture in a beaker when heating in a hotplate?Show a concept map about the aseptic technique on Transfer from Broth to Broth Culture, Transfer from Broth to Slant Culture, and Transfer of Broth to Plate Culture.