Q: Microorganisms are often grouped according to their optimum growth temperatures. Which groups are…
A: Bacteria spoil refrigerated foods.
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: Why would soil and water be added to a compost pile?
A: Compost refers to the organic material which is produced by the process of composting. Composting…
Q: Given its merits, why has advanced wastewatertreatment not been widely adopted?
A: Introduction: Advanced wastewater treatment has been used for a variety of purposes such as removing…
Q: Which concentration of alcohol is the most effective germicide?a) 100% b) 75% c)…
A: The agent used to kill microorganisms or germs is called germicide. Germs can be microscopic…
Q: Which organism(s) would likely be classified as an alkaliphile?
A: The pH is a negative logarithm of the hydrogen ion concentration. It measures how many hydrogen ions…
Q: Phenyl Ethyl Alcohol agar encourages the growth of what type of microorganisms?
A: Answer - Option A - Gram positive bacteria
Q: Why do you have to boil the agar solution before dispensing it into tubes?
A: Agar is the medium which can used to grow the micro organisms in petri plates. The selected…
Q: Agar is a solidifying agent used in media preparation. What is its origin?
A: Agar gel is a polysaccharide which can become liquefied at temperatures ranges from 85°C to 90°C and…
Q: Does the image above represent a pure culture? Yes O No
A: Answer- No
Q: What is the significance of finding coliforms in drinking water?
A: Some living organisms cannot be visible by the naked eye and only can be seen under the microscope.…
Q: The mechanical removal of microbes from a limited area of living tissue is referred to as -- a.…
A: Control of microbial propagation is very significant in medical, pharmaceutical, food industries,…
Q: How do primary and secondary wastewater treatmentmethods differ?
A: Wastewater treatment as the term suggest the removal of contaminants from the wastewater before…
Q: 8- The following are methods of sterilization EXCEPT: O c) Sterilization by filters O b) Autoclaving…
A: Introduction: A combination of heat, chemicals, irradiation, high pressure, and filtration can be…
Q: attern used to inoculate agar slant to get luxuriant culture. This pattern increases the surface…
A: Slant culture : A culture made on the slanting surface of a solidified medium in a test tube that…
Q: The most versatile method of sterilizing heat-sensitive liquids isa. UV radiation b. exposure to…
A: Sterilization is a process of removing or killing or deactivating mostly all forms of life present,…
Q: Why is heat an effective sterilizing agent?
A: Heat Energy : It is a form of energy which takes place by the movement of the minute particles…
Q: Environmental factors that could lead to failure of water treatment plant?
A: water treatment plants are those large scale equipments which helps in clearing and sterilizing…
Q: Why is it important to determine the number of mesophilic spores in a food ingredient?
A: Sometimes spore forming mesophilic bacteria found in food ingradient, mainly in dairy product. It…
Q: Name the thing which is not used for disinfection of drinking water.
A: Water from natural water bodies contains various disease-causing germs or pathogens which can cause…
Q: How does Efficient waste management improve aqua culture production
A: Environmental Biology is a branch of science that is the junction of environmental science, ecology,…
Q: Llamas
A: Llamas are the type of domestic animals. They dominated the area of the highlands of the Andes in…
Q: The use of sodium chlorite to inhibit the growth of Shigella in drinking water refers to ? O A.…
A: The use of sodium chlorite to inhibit the growth of Shigella in drinking water refers to…
Q: of biodegradation of organic contaminants. I
A:
Q: Why do meat packaging plants have to process/pretreat their wastewater before sending it into the…
A: Meatpacking refers to the process of turning livestock into the meat. The meat packaging plants or…
Q: Why are Sterilization, Antisepsis and disinfection necessary?
A: Sterilization is the process of killing or deactivating all forms of microorganisms and spores.…
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: C MSA (Mannitol Salt Agar) Match the description to the correct Bacterium A= growth, agar is yellow…
A: Microbiology is the branch of science that deals with the study of microorganisms that are too small…
Q: Why must water be subjected to microbiological analysis?
A: Water is used for various purposes in daily lifestyle including food. Thus, it should be monitored…
Q: To prepare nutrient agar medium, you have to pour approximately. mL of medium into the Petri plat a.…
A: A patri dish is a normal in which is used for the growth of bacteria and other microorganisms. it is…
Q: When would tertiary treatment of wastewater be necessary ?
A: Water is the important natural resources.Water treatment is done in order to reuse the water again…
Q: Why must you first clean debris from items before beginning disinfection or sterilization? (
A: Until the discovery of the microbes by the famous scientist Louis Pasteur, one of the signs of the…
Q: household contaminated wastewater purification
A: Microorganisms from sewage can cause human disease, but can also negatively affect important…
Q: how do microorganisms contribute to spoilage of coconut water
A: coconut water is a highly nutritive media having different components like carbohydrates , lipids ,…
Q: Which of the microbes listed below would be most optimal to use in alcohol production? O Escherichia…
A: Alcohol production Alcohol is any organic compound in which the hydroxyl functional group(-OH) is…
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: Why is reduction of BOD in wastewater a primary goal ofwastewater treatment? What are the…
A: Wastewater treatment is carried out to reduce organic and inorganic compounds in the wastewater to a…
Q: How do you prepare a Potato Dextrose agar in a 500ml glass bottle (NOT FROM COMMERCIAL POWDER)
A: Potato Dextrose Agar, also called as PDA, is a typical microbial growth medium produced using an…
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: 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: Why should you filter some liquids for sterilization, rather than autoclaving them?
A: To control microbial growth or contamination there are a number of aseptic techniques developed that…
Q: What is the difference between settling and sedimentation process in water treatment plant
A: Water treatment is defined as any process that will improve the water quality by making it…
Q: Wastewater from a local hospital were being treated in a general wastewater treatment plant (WWTP)…
A: Waste management is an important element of environmental protection. Its purpose is to provide…
Q: Do all gram negative organisms grow on EMB? A. no B. yes
A: EMB (Eosin methylene Blue) is a kind of media that is used to differentiate lactose fermenting…
Q: Why is it easier for microorganisms to grown on plastic surface rather than wood?
A: Answer- Wood does have natural antibacterial properties. The organism of bacterium like- Ideonell…
Why must you exercise caution when handling raw sewage
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- Given its merits, why has advanced wastewatertreatment not been widely adopted?1) would you describe the contents of the soil-inoculated broth as being a “pure culture”? Why or why not? 2) How did the uninoculated broth differ in appearance from the broths inoculated with E. Coli and M. Luteus? And then how could you tell if a supposedly sterile, uninoculated broth was contaminated? Please explain in detail and highlight the important parts cuz I am confused and need help! ThanksIn fixed-bed leaching, how it can be leached please mention one or two only.
- Why is secondary treatment of water in sewage treatment plant called biological treatment?What temperature is considered adequate for achieving sterilization of a compost pile? O 101 degrees F O 131 degrees F O 150 degrees F O 180 degrees FWhat is the importance of anammox in the treatment of wastewaters?
- Which statement among A-C is not applicable to flocculation, or floc formation, during wastewater treatment? A) O Filamentous bacteria enhance floc formation. B) O Flocculation is important for the production of a clear effluent stream of wastewater. O O Flocculation decreases the amount of BOD entering the effluent stream of wastewater. D) OA-C are all applicable.Why do you have to boil the agar solution before dispensing it into tubes?How does alkaline treatment improve the quality of agar/carrageenan extracted from the seaweed samples?