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vSludge that has been completely combined with water is recycled activated sludge.
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- Wastewater treatment process is endothermic or exothermic?Solid and liquid media are commonly prepared based on manufacturer’s instructions. If no instruction is provided on how the media should be sterilized, what would be the best option? METHOD:RATIONALE:What is the physical appearance (solid, liquid, semi-solid) of following media: agar plate
- Agar is a solidifying agent used in media preparation. How and why does the agar concentration in semisolid media differ from conventional solid media?Choose the one answer that fits best. Which of the following statements regarding the proper procedure for using Micropipettes is NOT correct? O a. You cannot use a 2-20 µl micropipette to pipet 200 µl O b. To expel all the liquid from the tip, you have to press the eject button O c. To draw up solution, press and hold the plunger at the first stop before entering the solution O d. Micropipettes always require the use of a disposable plastic tip O e. While pipetting, micropipettes should always be held as straight as possibleOf what practical importance are air borne microorganisms to the laboratory workers? What precautions should be taken to control laboratory contaminants? What precautions should be taken to control laboratory contaminants? Of what advantage is the using a solid and a liquid medium?
- Before inoculating and pouring molten nutrient agar into a plate, why must the agar first be cooled to 50°C?What is the physical appearance (solid, liquid, semi-solid) of following media:Agar deep tubeIn sterilization, which among the supplies, instruments, glassware, etc. under the list of materials can be sterilized using either or both equipment below? List them down. For "autoclaving" For Dry heat oven Can be sterilized only sterilization with either Materials: 200-ml Erlenmeyer flask Stove 500-ml Erlenmeyer flask Autoclave 10-ml graduated cylinder Analytical balance 100-ml graduated cylinder pH meter Spatula Stirring rod 100-ml beaker Test tubes Distilled water Petri dish Stirring rod Alcohol lamp Glass dropper
- Which of the following statements regarding low temperature storage is FALSE? Question options: all of these statements are TRUE refigeration inhibits microbes through the unavailability of water low temperature storage the metabolic rate of microbes many bacteria can survive freezing for years at a time psychrophiles are generally not effectively inhibited by refrigeration freezing causes microbial death through membrane destructionWhat is biochemical oxygen demand (BOD) test? At what stage of Sewage treatment this test is performed? BOD level of three samples of water labelled as A, B and C are 30 mg/L, 10mg/L and 500 mg/L respectively. Which sample of water is most polluted?Which of the following treatments would be most useful to remove microbes from air pumped into a surgical environment? Giant magnets Filtration Gaseous glutaraldehyde Gaseous alcohol