Q: Microorganisms are often grouped according to their optimum growth temperatures. Which groups are…
A: Bacteria spoil refrigerated foods.
Q: What chemicals are responsible for killing ingested microbes?
A: Neutrophils are components of the innate immune system that provide a front line defense against…
Q: determine the microbial virulence based on the number of colonies?
A: Microbial virulence is the microorganism ability creating damage in the host, it also gives the…
Q: Why is Hydrogen peroxide solution so effective against anaerobes?
A: Hydrogen peroxide is a chemical compound that is acts as mild antiseptic. It is also an endogenous…
Q: Describe the basic process of biofilm formation.
A: Biofilm refers to the collective growth of microorganisms on different surfaces. The microorganisms…
Q: List the different type of bacteria depending on the salt concentration required for their growth?…
A: Halophiles are found in three domains -Inside the Bacteria halophiles depend on salt concentration…
Q: Explain the desirable features of antimicrobial chemicals and what factors infl uence their eff…
A: The desirable features of an antimicrobial chemical include the following:It should be effective…
Q: egorise the microbial growth into four phases. In your own words, briefly describe eac
A: An organism that is microscopic is known as the microorganisms. These are tiny , small organisms…
Q: List five cellular or structural mechanisms that microbes use to resist antimicrobials.
A: The organisms that are not observed by unaided eyes are the microorganisms. These may be…
Q: How does the UV radiation control the microbial growth affect of cells?
A: It is required to describe the affect of ultraviolet radiation controlling the microbial growth of…
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 is microbial death? What factors affect the microbial death? What aremicrobisidal and…
A: The microbiology studies about both the diseases causing microbes and beneficiary microbes, about…
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: What is the differece between disinfection and sterilization? What is the dfference between…
A: Disinfection and sterilization are essential for ensuring that medical and surgical instruments do…
Q: What factors influence the appearance of microbial colony
A: Microbial colony can be defined as the visible mass of microbes like fungi ,bacteria etc on a…
Q: What happens to microbes that encounter temperatures belowtheir minimum and above their maximum…
A: Micro-organism are tiny organisms that cannot be seen by the naked eye, but are visible under…
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: 6 different types of chemical disinfectantsand how they damage microbial cells. Distinguish between…
A: Chemical disinfectants are usually known as the inactivate pathogens by chemically degrading their…
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: 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: What are the requirements for Microbial Viability? Describe each of them?
A: Microorganisms or microbes are microscopic organisms that exist as unicellular, multicellular, or…
Q: . How could microorganisms be used to remove phosphate in wastewater?
A: Microalgae are able to convert nutrients from wasrewater into biomass and bioproducts,thus improving…
Q: How alcohol is effective at contolling microbial growth?
A: Sterilization: Sterilization includes the complete wipeout of all microscopic life on a surface.…
Q: What is the relation of microbail growth to microbial physiology?
A: Microbes are small organisms that are found in a diverse range of habitats. The rate of growth and…
Q: Why are certain gram-negative bacteria more resistant than gram-positive bacteria to antimicrobials…
A: Gram-negative bacteria are characterized by the presence of thin peptidoglycan cell wall. The…
Q: How does the extremely high resistance of bacterial endospores influence sterilization practices,…
A: Endospore refers to a nonreproductive, dormant composition generated by some kind of bacteria. It…
Q: What is the use of hay infusion in determination of microbial motility?
A: Hay infusion use in determination of microbial motility.
Q: distinguish between antiseptics and disinfectants. Are the terms interchangeable? explain…
A: Disinfectants and antiseptic are used in living and non-living environments. Disinfectants and…
Q: What is narrow spectrum of microbial activity?
A: Microbial activity is the antimicrobial activity in which microbes are killed by a certain chemical.…
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: In which of the four phases of bacterial growth would an antibiotic best work?
A: Bacteria are microscopic, single-celled organisms. we can not see bacteria through naked eye. Some…
Q: How does the biofilm growth mode differ from that ofplanktonic cells? Which growth mode better…
A: Biofilm basically refers to the matrix like a thing that helps the cells to stick to one another. It…
Q: Which microbial control agent would most effectively inhibit anaerobes and why
A: Hydrogen Peroxide
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: Which microbe is grown for use as protein – rich food?
A: Proteins are polymers made up of polymers of amino acids, which are structural units. They act as…
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: What are the different types of Microbial Control
A: Microbial control agents are the biotically-derived chemical compounds or secondary metabolites 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: 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: What medical challenges do biofilms present?
A: Biofilms are microbial colonies that are linked to one another and enclosed in an exo-polysaccharide…
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: There are various environmental factors that can influence microbial growth and reactions. These…
A: The most necessary physical factors are pH, temperature, oxygen, pressure, and salinity. pH measures…
Q: What are the four basic stages of biofilm formation?
A: The biofilm is a thin mucous layer that is formed by a bacterial colony and a few other…
Q: What is the difference between disinfection, antisepsis, and sterilization?
A: Microorganisms are present every where. They are not visible with naked eyes but are present at…
Q: Many antimicrobial drugs target bacterial.metabolism. Which phase of microbial growth would be best…
A: Log phase
Q: Which of the following regarding controlling microbial growth is true? a) Microbial death rate…
A: Microbes are small organisms that may cause diseases.
How does being in a biofilm affect an organism’s susceptibility to antimicrobial agents?
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- How is UV radiation a good type of control mechanism against microbial growth? Explain what happens to the microbe and effects this control causes.What is the role of antimicrobials in disrupting microbial biota and causing superinfections?In which growth phase are microorganisms most sensitive to antimicrobial agents? Why?