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1. Discuss the three (3) possible ways by which microorganisms may utilize inorganic compounds.
Anwer this comprehensively and discuss the three ways thoroughly.
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- 1. Discuss the three (3) possible ways by which microorganisms may utilize inorganic compounds. Answer this comprehensively and discuss your answer thoroughly.1. Which of the following micro-organisms are the most resistant to heat sterilization? a. Vegetative bacteria (e.g., Samonella spp.) b. Spore-forming mesophilic bacteria (e.g., Clostridium botulinum) c. Spore-forming thermophilic bacteria (e.g., Bacillus stearothermophilus) d. Toxicogenic bacteria (e.g., E. coli O157:H7) e. All of the above are equally resistant to heat sterilization.1. are organic proteins which can speed up the biochemical reaction that occurs mainly outside or on the microbial cell surface. 2. Clean surface waters are normally saturated with . , which can be removed rabidly in the aerobic oxidation. 3. . and .. are the most importance two measures in water quality required to stabilize the wastewater. 4. The . process are responsible to limits the polluting discharge effect and the recovery time in rivers.
- The major characteristics of chemical control agents as a group include: (Select all that apply) O They may be placed into 3 groups based on strength of control: sterilants, disinfectants and antiseptics O Their primary function is to kill, inactivate or inhibit growth of microbes O They have different toxicities that govern their safe use. O Some of these are so toxic that they must be used under strict supervision and/or restricted placesBriefly comment on the use of alkaline phosphatase assays as a diagnostic aid for a single named common medical condition.2. Which of the following statements is true regarding steam sterilization? a. It is a universal technique, applicable to a product of any nature. b. At the same temperature, usually more effective than dry heat. c. Steam sterilization is amenable to a continuous workflow. d. The purpose of the steam is to keep the product from drying out during sterilization. Steam cannot be combined any other sterilization technique. е.
- 1.Differentiate between a microaerophile and an aerotolerant organism. 2.Why is resazurin a useful media additive for the study of anaerobes? 3.Why is a GasPak anaerobic jar necessary for the culture of anaerobes on plates of Brewer's anaerobic agar but not in tubes of fluid thioglycollate medium (FTM)? 4.Where in the human body would you expect to find an obligate aerobe? Where would you expect to find an obligate anaerobe?1. Define the following terms: a. Chermolithoheterotroph b. Microaerophile c. Chermoorganoheterotroph d. Obligate anaerobe e. Facultative anaerobic f. ColiformDescribe in detail the five industrial products made by microorganisms, and their applications.
- Name three advantages and three disadvantages of biological treatment in comparison with physical-chemical treatment.1. Define and differentiate the following terms: a. halophilic b. Capnophilic c. Microaerophilic1. Given the following common laboratory materials, which of the three methods of heat sterilization do you think is the most appropriate and practical to use in sterilizing them Why do you think so ? Method of heat sterilization Reason a. Empty flasks b. L-rod (glass rod) c. 10 ml glass pipet d. Wire needles e. Antibiotic solution