water sample could be (-) for coliforms when tested by PMF method, could this water still be a major public health threat and why?

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A: Any physical or chemical process that deals with the elimination or removal of both spores and…

Q: List two methods of high level disinfection.

A: The major difference between sterilization and disinfection is that sterilization involves the…

Q: THE MOST COMMON METHODS OF BACTERIOLOGICAL RESEARCH AIR 1. slit 2. thermoprecipitation 3.…

A: Please follow step 2 for detailed explanation.

Q: Describe several moist heat methods and their chief applications for sterilization and disinfection.

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Q: Briefly describe why herpes simplex viruses (HSVS) cause chronic lytic infections that typically…

A: Viruses are minute particles that are made up of only their genetic material which may be DNA or RNA…

Q: Oven sterilization at 121˚C was performed on glassware for 15 minutes only. Effect:  Rationale:

A: Sterilization  It is defined as the process in which micro-organisms whether bacteria, fungi,…

Q: Discuss why microorganism presents in the nature environment has a longer lag phase and shorter…

A: The microorganisms present in the environment are continually replicating and utilizing the…

Q: After adding ammonium sulfate, the mixture was allowed to stand with occasional stirring for 30…

A: Salting out refers to the decrease in solubility of proteins in the presence of very high salt…

Q: Cause-and-Effect Analysis: Given the conditions below, describe the effect on the staining procedure…

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Q: component used as a solidifying. .-1 agent for media

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Q: Which one of the following methods of antimicrobial susceptibility testing requires a dilution…

A: Antimicrobial susceptibility testing is a method which is used for determination of antimicrobials…

Q: 2. If a water sample tests negative for the presence of coliform bacteria, is it safe to drink?…

A: coliforms are the rod shaped and gram negative bacteria which ferment lactose to the acid and…

Q: water sample could be (-) for coliforms when tested by MPN method, could this water still be a major…

A: "Water contamination" may occur in a variety of ways, including Biological and Chemical…

Q: which agent was most effective against the fecal coliform that was tested? how does this agent…

A: Fecal coliforms are a kind of bacteria present in the intestines of warm-blooded animals such as…

Q: BACTERIAL ENDOTOXINS TEST  Fill-in the possible effect of the procedure and give the rationale.…

A: Bacterial endotoxins test is used to detect endotoxins from gram-negative bacteria with the help of…

Q: Why are elimination and control samples critical?

A: Biochemistry assay are the process of experiments which are conducted to find out concentration or…

Q: Describe how you would execute this first stage from the point you are handed the nutrient broth…

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Q: Compare and contrast antisepsis, disinfection, sanitization, and sterilization with regard to…

A: Microbes are the microscopic organisms that grow on different objects and surfaces in the…

Q: Disinfectant Concentration Growth after time of exposure (minutes) Control 5 minutes 10 minutes…

A: * Disinfectant is a chemical substance that inactivates or to destroy the microorganisms that are…

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: Match the physical and chemical methods of control with its use, mode of action etc. Purify H₂0…

A:

Q: explain any six (6) objectives of surveillance in public health and describe the features of passive…

A: Disclaimer: dear student due to time constraints I will be answering your first question here,…

Q: Identification of Gram-positive cocci: You have isolated a catalase-negative bacterium that doesn't…

A: * CAMP test ala called as Christie Atkins Munch peterson test which is used to identify group B…

Q: Prove if the statement is TRUE or False with complete solution.   At a dilution factor of,…

A: Data on colonies grown after plating pasteurised milk samples is provided. Because each cell…

Q: Provided with the following data, compute the corresponding CFU/ml of the original culture. ssume…

A: Ideally, plates with colony 25-250 colonies are used. As above 250 colonies are too numerous to…

Q: S. epidermidis P. aeruginosa S. aureus E. coli Image 1. Results of special media lab. From left to…

A: Gram-staining is a staining procedure to separate bacteria based on cell wall constituents. This…

Q: If your sample material is large and difficult to work with as a whole (e.g. leaf, muscle tissue),…

A: Typically, a sample is the approximate value of an object that is intended to be identical and…

Q: not test water samples directly for Salmonella typhosa or other pathogens

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Q: Idenitfy the statements whether they are TRUE or FALSE 1. You should use P-20 micropipettes to…

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Q: A raw wastewater is chlorinated before discharging into the environment. Due to potentially high…

A: The MPN is the most probable number. This is the test used to identify the most probable number of…

Q: Describe the standardized tests used to measure coliform density in water from preliminary tests,…

A: Coliform bacteria found in the environment and feces of the animal and human, they are the indicator…

Q: A water sample was taken from the Waikato River and returned to the laboratory to analyse water…

A: CFU is an abbreviation for Colony-Forming Unit. It is a unit of measurement used to estimate the…

Q: Describe the concept behind sterilization by filtration, includingexamples of applications.

A: Sterilization is a procedure adapted for the removal, killing, or deactivation of all life forms…

Environmental health and hazards

An organism's environment is the environment in which it lives and has an impact on its well-being. The World Health Organization (WHO) defines environmental health as "those aspects of public health, such as quality of life, that are influenced by physical, chemical, biological, social, and psychosocial components in the environment." Environmental health is concerned with both natural and man-made settings in order to enhance public health. Environmental science, occupational medicine, toxicology, and epidemiology are the key subdisciplines of environmental health.