The survival, growth and reproduction of microorganisms are influenced by physical and nutritional factors in its environment. Give the principle of microbial destruction/microbe population control behind sunbathing sleeping mats and pillows
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The survival, growth and reproduction of microorganisms are influenced by physical and nutritional factors in its environment. Give the principle of microbial destruction/microbe population control behind sunbathing sleeping mats and pillows
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- Which of the following statements regarding microbial death is FALSE? Question options: cell walls are targeted by many microbial control agents the effectiveness of an antibacterial agent is a funciton of its microbial death rate the rate at which microbes are killed is termed the microbial death rate all of these statements are TRUE few antimicrobial agents function through the disruption of protein structure under a given set of conditions, the fraction of a microbial population that dies per minute is typically constant over timeWhich of the following statements regarding microbial death is FALSE? Question options: cell walls are targeted by all microbial control agents all of these statements are TRUE many antimicrobial agents function through the disruption of protein structure under a given set of conditions, the fraction of a microbial population tht dies per minute is typically constant over time the effectiveness of an antibacterial agent is a function of its microbial death rate the rate at which microbes are killed is termed the microbial death rateThe survival, growth and reproduction of microorganisms are influenced by physical and nutritional factors in its environment. Give the principle of microbial destruction/microbe population control behind salting dried fish.
- Imagine yourself being assigned to a very poor, remote village to educate the people about sanitation and microbial control. What method of microbial destruction or microbe population control will you teach them in order to kill/destroy the microorganisms that may be found in: 1. the gallon of pond water collected for drinkingThe followings list the false statements about microbial growth curves EXCEPT* Log phase indicates that microbes need to adjust to a new environment of food Microbes grow exponentially when they are in the stationary phase Microbes grow exponentially when the conditions of the food are favorable for multiplication O Microbes start to die when they are in the lag phase O Lag phase indicates that microbes does not have enough time to growWhich of the following is an example of microbial control? Select all that apply. View Available Hint(s) ▸ Hint 1. What is meant by microbial control? Sue washes off the vegetables before serving them in a meal. Mary microwaves food before putting it on the table. Sue uses bleach to clean the kitchen counters. Mary places leftovers in the refrigerator after the meal.
- The clear zone around an antibiotic disk Multiple Choice is a plaque indicating the bacteria got killed is a zone of inhibition is a zone of inhibition indicating resistance of microbes is a zone of inhibition indicating susceptibility of microbesUse of chemical agents to destroy microbes on skin or tissues Reinoval of microbes from surfaces by scrubbing Removal or destruction of all microbes Use of chemical agents to destroy microbes on surfaces used by the public Use of physical/chemical agents to destroy microbes on non-living objects Free of contamination by pathogens Antisepsis (antiseptic) Aseptic Degerming Sanitization Sterilization DisinfectionWhen heat treatment is used as to control microbial growth, what is the immediate impact of this increased temperature? The microbe's DNA is digested and the microbe can no longer reproduce. The microbe is unable to attach to host cells. The microbe is unable to synthesize and secrete toxins. The microbe's food is destroyed and the microbe is without a food source. The microbe's proteins are denatured and the membranes are disrupted.
- In a clinical laboratory, all microbes contained in a clinical sample are isolated and identified. In a clinical laboratory, all microbes contained in a clinical sample are isolated and identified. True FalseBesides dehydrated foods, how might the amount of water available to microbes be decreased? Group of answer choices Treatment by non-ionizing radiation. Treatment at high pressures for extended periods of time. Storage at temperatures between -2 and 4 °C. Pasteurization Addition of solutes such as salt or sugar.For long-term storage of microbes that will be may be revived and grown later, what temperatures are best? Group of answer choices between -2 and 4 °C above 70 °C between -10 to -20 °C below -70 °C