Q: Which of the following is NOT a chemical method of microbial control? a) refrigeration b) ethyl…
A: In order to stop the spread of infections and diseases, microbes must be under control. Thereby…
Q: Describe several moist heat methods and their chief applications for sterilization and disinfection.
A: Disinfection is reducing or eliminating the number of microorganisms from the surface of the…
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: Phenyl Ethyl Alcohol agar encourages the growth of what type of microorganisms?
A: Answer - Option A - Gram positive bacteria
Q: Suppose you are checking the microbial quality of a raw material using agar culture media. After…
A: Unwanted microbial growth occurs when no proper care is taken while tranferring the culture on the…
Q: Physical methods of sterilization include :
A: disclaimer: since you have posted multiple questions we have answered the first question for you. if…
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: What are the physical methods of microbial control
A: Control of microorganisms is fundamental to forestall the transmission of illnesses and disease,…
Q: Why is it important to become familiar with the microbiology laboratory's apparatus and equipment?
A: You should always know your lab equipment well before you do any type of experiment because without…
Q: Why do we test water for coliforms if they are not considered pathogenic?
A: Introduction Coliforms are gram-negative, non-sporulating and motile or immotile bacteria. They…
Q: micro-organisms are the most resistant to heat sterilization?
A: Most of the bacteria cannot survive adverse heat condition. But somehow particular bacteria can…
Q: when heat treatment is used as to contril microbial growth, what is the immediate impact of this…
A: The process of killing microbes or preventing their growth is called as sterilization. Sterilization…
Q: What temperature is considered adequate for achieving sterilization of a compost pile?
A: temperature considered for achieving sterilization of a compost pile is 135-160 F. At a…
Q: What is the hurdle technology used to destry the microbial load in squash soup?
A: Squash soup is a liquid dish and it is present with High nutrients and low calorie i.e low carbs.…
Q: a) Microbial products can be classified in three major categories which related to the microorganism…
A: Microbial metabolism defines all the internal bio-chemical pathways, through which microbes obtain…
Q: Transparent double-sided dishes used for growing microbes are most commonly called A) Petri dishes.…
A: The micro organisms are grown in specific containments for identification of the characteristic…
Q: How alcohol is effective at contolling microbial growth?
A: Sterilization: Sterilization includes the complete wipeout of all microscopic life on a surface.…
Q: hich method for introducing microbes on media uses an inoculation loop and the bacterial sample is…
A: Answer. The four-quadrant streak method is used for introducing microbes on media using an…
Q: If you had a mixed culture that contained a Gram-negative enteric bacterium and Gram-positive…
A: MSA or mannitol sale agar used in microbiology. It encourages growth of some group of bacteria…
Q: Which of the following medium is considered an enriched medium? a. LB b. T-soy c. Nutrient d.…
A: A growth or culture medium is solid, liquid or semi solid in nature that is used to support the…
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: Microscopic count is used to estimate microbial load of a sample by counting colonies present on the…
A:
Q: How is air contamination prevented when an inoculating loop is used to introduce or take a bacterial…
A: Biotechnology is a branch of biology, including the use of living organisms to produce products.…
Q: What sources of microbial contamination are in nutrient agar exposed in air,water,soil and plant…
A: Sources of microbial Contamination: - AIR: - Air contains a lot of bacteria staying afloat in the…
Q: Differentiate between a pure culture, subculture, mixed culture,and contaminated culture. Define…
A: The microorganisms are isolated as pure cultures by being inoculated in a container of medium in…
Q: Why should caps of glassware be loosened first before sterilization? [Answer in not more than 2…
A: Sterilization is defined as the process which removes , kills or deactivates all forms of life (in…
Q: Give a brief but critical discussion about microbial growth in natural environments and how it…
A: Living creatures reproduce and grow. Microbes become metabolically active and proliferate when they…
Q: Aseptic technique refers to A) the microbial inoculum placed into a test tube or onto a Petri…
A: Following aseptic techniques is an important part while performing an experiment. Aseptic technique…
Q: How we can isolate microorganism from food? Please briefly explain at your own words.
A: Microorganisms are cosmopolitan in nature, which means they are present everywhere- in air, on…
Q: Propose a confirmatory procedure that will determine if the microbial growth recovered from canned…
A: A microbe is a living entity that is so tiny that it cannot be seen with the naked eye. Microbiology…
Q: What appropriate method should be used in controlling microbial growth in each of the following? 1.…
A: The control of microbes and other biological agents from organic substances is called sterilization.…
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: Describe the five phases of a microbial growth curve observed when microbes are grown in a batch…
A: Introduction: Bacteria is unicellular prokaryotic organism that can survive in any kind of…
Q: Describe the five phases of a microbial growth curve observed when growing microbes are grown in…
A: The bacterial growth curve represents the number of live cells in a bacterial population over a…
Q: Why does saliva not serve as a good microbialgrowth medium?
A: Saliva is the watery, frothy substance that is produced in the mouths of some animals, including…
Q: how could you determine if there is any contamination on your agar?
A: Agar consists of two polysaccharides, agarose and agaropectin, but agarose making up about 70% of…
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: Based off Pasteur’s sterility experiment, which of the following choices is least likely to result…
A: Louis Pasteur was the scientist who invented pasteurization, which is a technique to kill…
Q: Why don’t health departments routinely test for pathogens instead of using a sewage indicator?
A: The most widely used sewage indicator organisms are fecal coliforms. This is because these microbes…
Q: Draw two tubes showing how you have inoculated microorganisms in urease and in nutrient agar
A: Inoculation is the transfer of the bacteria on the nutrient medium to show its growth. The tools…
Q: selective agar media for gram-positive bacteria?
A: Phenyl Ethyl Alcohol Blood Agar is a selective media for gram positive bacteria.
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 are the different Microbiological sterilization techniques used for Microbiology equipment and…
A: Microbiology is the branch of biology that deals with the study of microorganisms such as bacteria,…
Q: What is the difference between a disinfectant and an antiseptic?
A: As per our company's guidelines we are supposed to answer single question at a time, please repost…
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- If a yellow halo is present around a colony on a mannitol salt agar (MSA) plate, the bacterium cannot ferment mannitol.Agar is a solidifying agent used in media preparation. What makes it ideal for cultivation of microbes?If a yellow halo is present around a colony on a mannitol salt agar (MSA) plate, the bacterium cannot ferment mannitol. true or false
- For each of the following situations, describe how bacteria on these growth. media would appear on the plate: A. On MacConkey agar, a bacterium that grows on the medium but is negative for lactose fermentation B. On EMB agar, a bacterium that grows on the medium but is positive for lactose fermentation C. On mannitol salt agar, a bacterium that failed to grow on the medium D. On mannitol salt agar, a bacterium that grew on the medium and fermented mannitolListen Which of the following methods of microbial control is used most often with surgical equipment? a) autoclave b) sugar and salting c) dessication d) lyophilizationDescribe how you would execute this first stage from the point you are handed the nutrient broth tube containing the mixed culture, through to the appearance of two colony types on a nutrient agar plate. Assume you have all the necessary equipment and materials at your disposal. Be concise, but thorough; limit yourself to a short paragraph (1/4-1/2 page at most) – include the method and techniques; what you expect to see, and how you would avoid contamination during the process.
- You are hired in one of the microbiology labs in Memphis and your first assignment to identify microbial samples from a local restaurant. You are given a set of slides and asked to classify the specimens as Gram positive or Gram negative. 6) What would be the last reagent you use to identify the bacteria? 7) What type of visual aid you need to help you see the bacterial samples clearly? 8) After the use of what reagent, you will be able to decide if you have a Gram positive or Gram negative bacteria? **Please give the answer**Mueller-Hinton agar needs to be made to specific standards in order to yield reliable, reproducible results. How deep is the agar on a Mueller-Hinton agar plate? a) 2 mm b) 4 mm c) 6 mm d) 8 mmMicrobes are cultured for various industrial products. How growth curve can be used for maximum product formation?
- An unknown bacterium produces colorless colonies when inoculated onto an EMB plate. Predict what you would see if you inoculated that same unknown onto the Mannitol salt agar media?What appropriate method should be used in controlling microbial growth in each of the following? 1. Chicken serum 2. Fresh goat milk 3. Nutrient broth 4. Paracetamol 5. Inoculation loobShould you sample an area for microbial growth before or after sanitization? Eplain why.