State the usefulness of the Columbia CNA and EMB agar.
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5. State the usefulness of the Columbia CNA and EMB agar.
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- 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. What are the different materials and steps used in COTTON PLUG making in the laboratory?27. Which of the following is an invasive procedure in antiaging treatment.... A. use of sunscreenB. use of antioxidantsC hormone therapyD. radiofrequency 29. The following are indicators of the stability of a product, except..... A. change in pHB. dosage form does not changeC) the growth of microorganismsD. increased side effect
- 1. Which of the following statements about agar is NOT true? A. It is derived from algae. B. it is typically utilized by bacteria. C. It is solid at room temperature. D. It is the defining ingredient between liquid and solid versions of the same media.2. a. explain 5 methods of nutrient uptake by cells b. explain the problems that may arise in the process of media sterilization using heat1. 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
- 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. Make a timeline of the development and advancement of Microtome. Include the significant inventors and people who contributed in developing the microtome. 2. Illustrate the different types of Microtome. a. Identify its uses b. Identify its different parts and the uses of its parts c. Differentiate how this particular type of microtome being used1. While working with Mannitol Salt Agar you notice the growth of staphylococci however other microorganisms are growing as well. How would you interpret this?
- 5. You were asked to prepare 250 ml of Acidified Potato Dextrose agar for the subculture of Alicyclobacillus sp. Given the composition of the medium below, compute for each component of Acidified PDA. :Components Amount per liter Potato Infusion 200.00 ml Dextrose 2.00% (w/v) Tartaric acid 1.00 ml of 10.00% solution (available as stock solution of 50,000 ppm) Agar 1.70% ‒‒‒‒‒‒‒‒‒‒‒‒‒ 5.3. Tartaric acid. Express your answers using two decimal places. Follow this format in typing your answers: answerabbreviated unit (e.g. 3.00 g. 0.75 ml, 10.25 mg) (2.5 pts).1. Determine the amount of dehydrated medium needed to prepare 50 nutrient agar plates. Include amount for 2 additional plates as excess to compensate for compounding losses. 2.1.What makes the thermometer position correct? What data issues can arise from an improperly placed thermometer?