Is there any pH buffering system or device for acidic microbiological experiments?
Q: List two methods of high level disinfection.
A: The major difference between sterilization and disinfection is that sterilization involves the…
Q: A food sample with an unknown number of contaminating bacteria was serially diluted to 10-6. A…
A: Serial dilution of a food sample containing unknown quantity of contaminating bacteria was performed…
Q: As a microbiology student, how can you prevent or control coliform contamination in drinking water…
A: Coliforms are found in feces and warm-blooded animals and humans. They are pathogenic when found in…
Q: Which of the media types would predict is used to detect possible fecal contamination of water in…
A: The fecal contamination of water in Puget sound comes from sources like marine effluent discharge,…
Q: Does a positive presumptive test mean that the water is absolutely unsafe to drink? Explain. 2.…
A: Presumptive tests are cheaper than the confirmatory test. These tests are conducted to ensure the…
Q: Explain whether the MacConkey agar plate inoculated with good water would show the presence of…
A: Water contamination is the presence of unwelcome particles in the water. Water bodies may become…
Q: Is the eosin methylene blue agar? (EMB) a complex or defined medium? Explain based on its…
A: Complex media consists of nutrients such as water soluble extracts of plant or animal tissue and…
Q: Describe the purpose of identifying unknown bacterial culture in medical field. Name the step by…
A: Identification of new microbes or bacterial strains is a key factor in scientific research. This…
Q: Why is it necessary to maintain aseptic conditions in microbiology?
A: Aseptic conditions means microbs free environment. Microbs means bacteria, virus and fungi. It may…
Q: Which of the following would you most expect to find in a fecal contaminated water sample?…
A: Water pollution is described as the fouling of bodies of water. Water pollution occurs when rivers,…
Q: Why is the membrane filter method preferred to the most probable numbermethod (MPN) for the…
A: Most probable number (MPN) is a method used to estimate the numbers of bacterial cells in a water…
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: A Pure colony is needed for inoculation in sterile water, a small portion of culture media was…
A: Introduction Culture is referred to the process of growing the cell outside the animal or plant…
Q: Describe the purpose of identifying unknown bacterial cultures in medical field. Name the step by…
A: It Produces benefits in lots of components of ciral studies and assists physicians intreating…
Q: A broth culture is initially inoculated with a single bacterial cell. For the first hour the…
A: * Given that The bacteria has generation time of 30 minutes. So it takes about thirty minutes to…
Q: After a series of experiments, bacterial cultures were identified for disposal. How can these be…
A: Decontamination refers to a process which reduces the biohazardous effects of an infectious agent,…
Q: The Effect of Closure Type on Preventing Microbial Contamination of Cosmetics Bacteria were isolated…
A: Shampoo, conditioner, serum, and oils are hair care products whereas lotions, moisturizers, etc.,…
Q: How are microorganisms able to change the pH of the media in which theyare grown?
A: The microbes can live and reproduce only within an optimum range of environmental conditions. Many…
Q: Why is CFU more applicable to a culture of Streptococcus than to a culture of E. coli?
A: Colony-forming unit (CFU) represents the number of colonies formed on the media plate from one…
Q: What are the advantages and disadvantages of observ-ing living-specimen slides and…
A: Microorganisms are the organisms that are not visible to the naked eye. Their size ranges in few…
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: not test water samples directly for Salmonella typhosa or other pathogens
A: There are serious limitations to the use of direct isolation of specific pathogenic bacteria for…
Q: explain how the use of an Eosin methylene blue agar plate can help determine the type of fermenters…
A: Eosin methylene blue agar (EMB) is a selective and differential media.
Q: Why is it critical to be able to determine the overall number of bacteria present in a food sample?
A: Hi, Thanks For Your Question. Answer : Monitoring Of Total Bacterial Count Is Necessary, Because…
Q: Which of the media used in these labs (MSA, BAP, CAP) was selective? differential? highly enriched?
A: INTRODUCTION Differential media Used to differentiate among organisms Selective media Selectively…
Q: Why is Escherichia coli used as an indicator organism inmicrobial analyses of water?
A: The well-known gram-negative bacteria are E. coli (Escherichia coli).
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: Why is identification of bacterium's growth patterns in broth important.
A: The question asks to determine the importance of broth in the identification of a bacterium.
Q: what type of bacteria may cause spoilage in coconut water that has been in the fridge for more than…
A: Coconut Water Coconut water (CW) is a slightly sweet liquid made from the endosperm of coconuts.…
Q: Define the term “colony” as it relates to bacterial growth on solid media.
A: The pure culture techniques are carried out in the microbial laboratories, where the microbes of…
Q: Can you classify household disinfectants as sterilants? What organisms (if any) survive after the…
A: Sterilization is the process of complete destruction or removal of all forms of life which…
Q: how often must bacteria be subcultured from a broth to maintain culture viability?
A: Answer: Sub-culturing is the method of regrowth of the bacterial cells in to a freshly prepared…
Q: Considering microbial identification methods, to which category would the following method belong…
A: Bacteria are identified routinely by morphological and biochemical tests, supplemented as needed by…
Q: Why is it important to distinguish between E.coli & E. Aerogenws in contaminated water samples?
A: E.coli is a rod-shaped, gram -ve, facultatively anaerobic, coliform bacterial species that is…
Q: Based on the growth you saw on your Lee’s Agar plate, what conclusions can you make about the…
A: Lee Agar is used to study the bacteria that can grow on yogurt. It is primarily used to count the…
Q: Why are dilute culture media used for isolating pelagicmicrobes?
A: Pelagic habits are abundant in microbes. The diversity spans domains, however it is usually seen…
Q: What physical and chemical conditions are necessaryfor the rapid microbial degradation of oil in…
A: Biodegradation refers to the transformation of complex organic compounds by bacteria, fungi, and…
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: “Salt agar” is a type of ______ medium for culturing some microbes and not others
A: Salt agar encourages the growth of certain bacteria while inhibits others growth in the same medium.…
Q: Based on the results of this Gram stain and the ID matrix below, which of the following microbes…
A: Gram' s staining helps in bacterial identification and their further classification. On the basis…
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: Why do petroleum-degrading bacteria need to attach to thesurface of oil droplets?
A: Petroleum is a crucial strategic resource and all countries compete fiercely for it. The…
Q: What method can be used to achieve sterilization?
A: It is required to describe the method to be used to achieve sterilization.
Q: Identify the method of preservation and maintenance of microbial cultures based on the period of…
A: Identify the method of preservation and maintenance of microbial cultures based on the period of…
Q: Based on the bacterial cultivation, what are the possible organisms under its gram reaction?
A: Gram reaction in microbiology is a staining procedure that is used to differentiate bacteria based…
Q: Discuss the THREE (3) main stages crucial to microbial leaching of copper from a low-grade ore,…
A: Bioleaching involes microorganisms .Main copper minerals include sulfides, (CuFeS2) chalcopyrite,…
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- Why is water tested for coliform bacteria rather than for pathogenic bacteria which may be present?Another method of microbial control is filtration. List down at least 5 kinds of filters which could be used for this method?Mannitol salt agar is often used to distinguish between different species of Staphylococcus, a gram positive bacterium that is well adapted to living on dry, salty skin. Disease-causing strains of Staphylococcus ferment mannitol; non-pathogenic strains cannot use mannitol. Is the medium Defined or Complex?
- A class of 15 students (8 males and 7 females) will need to culture an unknown bacteria for a specific activity where 5 nutrient agar pates per female student and 3 agar slants per males student are needed to prepare. agarplate: 25mL Agar slant: 10mL Broth tube: 8mL Nutrient Agar: Yeast extract: 2g/L peptone: 5g/L Sodium chloride: 5g/L Agar powder: 15g/LIs it acceptable to give a formal name to a microbe that hasn't been isolated and cultivated? What type of name should a microorganism have if it has been well identified but cannot yet be cultured in isolation?A microbiologist used the concept of enrichment culture to isolate aerobic and anaerobic nitrogen-fixing bacteria, sulfate-reducing bacteria, and sulfur-oxidizing bacteria. What kind of selective media could he haveused for isolating each of these four classes of microbes?
- This number is always less than one a) Dilution factor b) Dilution c) Both dilution factor and dilution d) Neither dilution nor dilution factorThis number is always less than one a) Dilution factor Ob) Dilution c) Both dilution factor and dilution d) Neither dilution nor dilution factorWhich techniques may be used for viable counting methods of microbial measurements? Explain.
- What are the advantages and disadvantages of plate count technique over other methods of quantifying microbial populations?A microbe is growing on Sabouraud dextrose agar, which has a slightly acidic pH. Which of the following is this microbe likely to be? a Gram-negative bacterium an acid-fast bacterium a fungus a Gram-positive bacteriumexplain how the use of an Eosin methylene blue agar plate can help determine the type of fermenters that bacteria are. explain throughly.