Q: Which of the following pairs is mismatched? a. catalase: hydrogen peroxide production b.…
A: Answer solved.
Q: A specific heat treatment used on a particular bacterial suspension has a DRT of 10 seconds, how…
A: Heat treatments have been used for the reduction of bacterial numbers and even for sterilization…
Q: Describe the basic process of biofilm formation.
A: Biofilm refers to the collective growth of microorganisms on different surfaces. The microorganisms…
Q: What is the effect of light on microbial growth?
A: Introduction:- The quantity of bacteria in a population, rather than the size of individual cells,…
Q: Describe the advantages and disadvantages of aldehyde agents in microbial control.
A: The general formula of aldehydes is R-CHO. Several low molecular weight aldehydes are antimicrobial.…
Q: Which has a greater impact on the survival of an organism, temperatures above its maximum…
A: The microbes grow in a wide temperature range. The microbial growths are found to be higher at their…
Q: List 5 physical methods of controlling microbial growth, and give an example of each. Why is moist…
A: Heat is one of the best and commonly used physical methods to control microbial growth. By heating…
Q: explain in your own words an introduction to a lab about Control of Microbial Growth - Antimicrobic…
A:
Q: In a hypotonic solution why would potato stick become crispier?
A: A hypotonic solution has fewer dissolved particles (such as salt and other electrolytes) than normal…
Q: Microbial growth is measured by what parameter?(a) Increased cell size(b) Increased size of cellular…
A: The term microbial growth can be defined as the growth of the population or an increment in the…
Q: The optimum growth pH for a microorganism is usually: 4,5,7 or 8
A: pH is the scale on which the acidity or alkalinity is measured. It is the scale between 1 to 14.…
Q: Decomposition is faster if deteritus is rich in nitrogen and water soluble substance like sugars.…
A: Decomposition is the conversion of complex organic matter into inorganic substances by decomposers…
Q: Explain the mechanism of action of several of the physical and chemical agents employed to control…
A: Microbes such as bacteria, viruses, worms may act as nuisance causing various diseases in plants,…
Q: What are the requirements to support microbial growth?
A: Microbial growth refers to growth (increases in the number of cells) of a microbial population. In…
Q: Differentiate between a microbistatic and microbicidal agent.
A: Microbicidal and microbiostatic generally fall within the antibacterial scope. The toxic gas…
Q: These were the treatments from the catalase concentration experiment. Which tube would show the most…
A: Enzymes are proteins that catalyze the reaction so that the activation energy required by the…
Q: Explain the purpose and phase where cells lose flagella and motility in biofilm formation, and why…
A: There are several steps associated with the biofilm formation. The first step includes adherence of…
Q: Explain why bacteria are limited to growth within a given temperature range? Explain why bacteria…
A: Bacteria are single-celled organisms with a small size. Bacteria can be found practically everywhere…
Q: why do microorganisms differ in their response to disinfectants
A: Microorganisms are the minute microscopic organism that is generally invisible to the human eye.…
Q: Why does turbidity in a cultured media losses its reliability at high cell concentrations?
A: turbidity is used as a measure of cell density within a culture sample.
Q: How would the pH of the culture medium be influenced by sugar fermentation? By urea hydrolysis?
A: Microorganisms grow well at their optimal pH. The concentration of hydrogen ion affects the growth…
Q: Suppose you wish to test a species of bacteria to see if it will grow under anaerobic conditions.…
A:
Q: Why do we study how to control microbial growth? Give concrete examples wherein our understanding of…
A: Introduction :- Bacterial growth occurs when a bacterium divides into two daughter cells, a process…
Q: Taking microbial cells out of a stationary phase culture and putting them into a fresh, sterile…
A: Growth in higher organisms refers to a rise in size and volume, whereas growth in bacteria refers to…
Q: Explain why, when using an antiseptic, killing all thebacteria may not be the desired result.
A: Infection precautions are generally followed to reduce the risk of transmission of infection from…
Q: Which of the following apply to silver as a chemical inhibitor of microbial growth? Acts as a…
A: Sterilization is the method of removal or killing or elimination of live cells from any surface.
Q: All of the following are cofactors of SOD (superoxide dismutase) EXCEPT? A. Zinc B. Maganese C.…
A: Introduction The enzyme superoxide dismutase catalyses the dismutation (or partitioning) of the…
Q: Compare and contrast the action of alcohols, halogens, and oxidizing agents in controlling…
A: Alcohol is used as disinfectant for centuries.Alcohol is extremely effective in fight against single…
Q: Pasteurization is a technique that uses temperatures of about 72°C to neutralize potential pathogens…
A: The process of pasteurization involves heating food at a particular temperature for a specific…
Q: An organism capable of growing only in a low salt concentration, such as saline, is considered…
A: According to guidelines we have to answer the first question only. so please kindly post the…
Q: Define the following termonologies in brief : Focal Adhesion Biofilm Calcification and examples…
A: "Since you have asked multiple parts of the same question, we are eligible to answer only the first…
Q: determination of microbial motility, why do you think the microorganisms are ubiquitous?
A: Solution : The motility test is used to determine whether an organism is motile or non-motile.…
Q: When applying a disinfectant to kill microbes, our bead experiment showed that what two factors…
A: The disinfectants are the compounds that destroys or inactivates the microbes given it is on an…
Q: Give one effect of the following problems encountered in Histotechnique. a. Insufficient clearing b.…
A: Microtomy is a method which is used for cutting very thin section of hard tissues and bones . It…
Q: Classify the electron holders used by microorganisms according to the rate of biodegradation. What…
A: Biodegradation refers to the disintegration of organic matter using microorganisms like fungi and…
Q: In an experiment, the bacteria were placed in dropper bottles containing glycerol as a carbon…
A: The purpose is to kill any previous bacteria on the loop before it is exposed to the bacteria. The…
Q: Describe what happens to a non-halophile bacteria in food when the water activity is changed from…
A: The water activity of the food is defined as the ratio between the vapor pressure of the food under…
Q: what is the difference between volatile oils and fixed oils in terms of degradation?
A: Oil is a triglyceride that is liquid at room temperature. It is a nonpolar chemical substance that…
Q: How is household antibacterial soap like a weapon against pathogenic bacteria?
A: Antibacterial soaps are those that contains certain chemicals that inhibit the growth of pathogens .
Q: An example of an agent that lowers the surface tension of cells isa. phenol b. chlorine c. alcohol…
A: Cells are the basic structural and functional unit of life. There are two types of cells prokaryotic…
Q: If my cultures are suffering severely due to alkaloid production and accumulation in the medium. In…
A: Alkaloids are basically the natural substances that can be used largely for human medication.…
Q: Spores and toxin-producing microorganism produce toxins need higher Aw than minimum Aw for microbial…
A: Water activity (aw) is basically a term describing the availability of water to microorganisms. It…
Q: A culture medium consisting of known amounts of glucose, NaCl, and ammonium and potassium phosphate…
A: Culture medium is a nutrient medium which is used to grow microorganisms by providing appropriate…
Q: What chemical ingredients make MSA differential? How (in your own words) do those chemical…
A: Introduction A liquid medium known as enrichment media contains specific selective agents,…
Q: Given the ultimate location of aquaporins in the cell, where would they be manufactured?
A: Aquaporins (AQPs) are transmembrane protein which help in the regulation of water flow into and…
Q: Give two reasons for why heat fixing is used? Adherence of bacterial cells to the slide…
A: Haet fixing is the procedure in gram staining of the bacteria. This has to be done so that the…
Q: Growth medium: You are running different experiments on microbes and need to make sure you choose…
A: A growth medium is a solid/ liquid media designed to support the growth of a population of…
Q: Why do we use turbidity as a method to measure bacterial growth? How does it work? How do you…
A: Turbidity measurement is one of the methods to measure the microbial cultures, helps determine the…
Q: Which of the following regarding controlling microbial growth is true? a) Microbial death rate…
A: Microbes are small organisms that may cause diseases.
In some cases, why does a chemical is more effective as a microbicide when it is diluted rather than full strength?
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- Explain why, when using an antiseptic, killing all thebacteria may not be the desired result.Two cultures of a facultative anaerobe are grown in the same medium, but one culture is exposed to air and the other is maintained under anaerobic conditions. Which of the two cultures will contain more cells at the end of a week? Why?Explain why high concentration of suger, salt and acid do not support microbial growth, only it have to be in neutral level?
- In an epoxidation lab, why is it important to continue stirring vigorously in order to get a good yield?An obligate halophile is an organism that requires high osmotic pressure.True or false?Your supervisor contacts you to tell you that your recommended antimicrobic treatment did not work and the patient is still sick. Your supervisor thinks you may have misidentified the organism or that the organism was actually resistant to the antimicrobic. Write a follow-up paragraph to explain:- What may have gone wrong in your identification or choice of antimicrobic? - How could you convince your supervisor that your initial conclusion is accurate?
- Compare and contrast the action of alcohols, halogens, and oxidizing agents in controlling microbial growth.Why are microbial cells negatively charged? Why are clay particles negatively charged? How can microbes attach to clay particles if they are both negatively charged? How can microbes access large complex cellulose polymer molecules for intracellular metabolism?Which has a greater impact on the survival of an organism, temperatures above its maximum temperature or temperatures below its minimum temperature? Explain why and how this relates to typical methods used to control microbial growth.
- Which antimicrobics would be suitable for the control of the following organisms?S. aureus:E. coli:P. vulgaris:P. aeruginosa:give one reason why is it necessary to keep stirring the agar medium mixture in a beaker when heating in a hotplate?A chemolithotroph would use which of the following as a source of energy? magnetic field glucose light H2