1. Tools that do not need to be brought when sampling is… a. thermometer b. Hygrometer c. PH meter d. DO meter
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1. Tools that do not need to be brought when sampling is…
a. thermometer
b. Hygrometer
c. PH meter
d. DO meter
2. In the deposition method, one of the conditions that must be met is…
a. The precipitate has a high solubility or solubility product
b. The precipitate formed must be quite difficult to dissolve
c. The precipitate formed does not have to be quite pure
d. Free precipitate form
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- 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 possibleThe blood sprayed on the surface of liquid nitrogen is .A appealing method .B Thin wall method .c sand method .D CryosurgeryRed blood cells from a healthy individual were placed in each of the following solutions and observations were made after 1 hour. Cells would have most likely have lysed when placed in a. 1.2% NaCl b. 0.9% NaCl c.3.8% NaCl d. 0.3% NaCl
- Which of the following is an important consideration when selecting a disinfectant for use in the facility? Please select all that apply. (mark all correct answers] a. Pathogens affected by product O b. Contact/Kill time O c. Safety profile of the product Od. se of seIf you prepared a tube with 10-2 dilution and from this 0.1 ml ia taken into 9 ml medium, the new tube will have: Select one: а. 10-1 b. 10-5 C. 10-3 d. 10-4 e. 10-2 CLEAR MY CHOICEIf 0.1 ml is added to 99.9 ml medium, this results in a dilution of: Select one: а. 10-3 b. 10-4 С. 10-1 d. 10-5 e. 10-2
- What is the best method to filter the precipitate from it's reaction mixture? a Gravity filtering is accomplished by folding the filter paper into a cone and placing it in a long stem funnel. b Vacuum filtering using a Buchner funnel with filter paper. c Using a filtering crucible that can be dried and ignited at red heat. d All of the above, just depends on the precipitate.Which of the following is an important consideration when selecting a disinfectant for use in the facility? Please select all that apply. [mark all correct answers] a. Pathogens affected by product b. Contact/Kill time c. Safety profile of the product d. Ease of useWhich among the following statements is correct? O A positive result for Fohl's test is the formation of a black precipitate in the form of lead. O A positive result for Millon's test is characterized by the formation of a red-colored precipitate or solution. O Both statements are correct Both statements are incorrect
- AY AY * 00 HI T 00 2 3. ment10: Connect Regis.. M https://Ims.mh.. nemical Content of Media i Saved Help Save & Exit Chec Chemically defined medium Complex medium 2 Enriched medium Fastidious Heterotroph 9 Autotroph Match each of the options above to the items below. Uses inorganic carbon as a carbon source for building its own organic molecules. A type of organism that has complex nutrient requirements and requires a nutritionally dense environment. A media containing extracts from other other organisms. A medium with specifically added nutrients to enhance the growth of fastidious organisms. An organism that uses organic carbon as its carbon source. A medium of which the exact chemical composition is known. MacBook Air DD F7 000 000 F2 F4 F5 F8 %23 2$ 4. 9- } 1 Y | 7.Which of the following is FALSE about the Nitrate Reductaion Test, procedure and interpretation? Question 2 options: A Nitrate medium contains 0.1% potassium nitrate as a substrate B Reagent A and B are used to determine the presence of nitrite C When zinc is added, it will react with any nitrate and turn red D A tube with red after zinc is a positive test for nitrate reduction E A tube that turns red after reagent A and B is a positive testGive the use and advantages of the following cultures for the examination ofcolony characteristics: a. Agar plateb. Agar slantc. Broth cultures