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- If a experiment took place with culture of Ecoli What happens to the ampicillin flask when added to the e coli? b) How can this effect be explained 11.a) What happens in the flask with chloramphenicol? b) How can this effect be explained 12.a) What happens in the flask with streptomycin? b) How can this effect be explainedA solution of ascorbic acid for injection is prepared for: A) Water for injection B) Purified water C) Water for injection, purified from CO2. D) Water for injection saturated with CO2.Which of the following is an important measure that may prevent bacterial contamination in tube feeding formulas? Question 71 options: a) Discarding opened containers of formula not used within 24 hours b) Adding formula to the feeding container before it empties completely c) Using the same feeding bag and tubing each day d) Adding the full days worth of formula to the bag at the start of each day
- Is the Triple-Sugar Iron Agar (TSIA) a complex or defined medium? Explain based on its composition. Is the test tube a A) broth, B) slant, or C) deep agar medium? Why is a “needle” used to inoculate?In step 3 of today's protocol, it mentions that the incubation step with the P2 buffer should not be allowed to proceed for more than 5 minutes. a) What is the chemical composition and concentration (not mass) of each component of the P2 buffer?b) c) What is the purpose of adding the P2 buffer? What would be the major problem if this step is allowed to proceed for a long period of time?GROWTH OF FUSOBACTERIUM ON KANAMYCIN/VANCOMYCIN AGAR (KV) CAN BE DESCRIBED AS a) pigmented b) black c) hemolytic d) inhibited (no growth)
- Antibiotics are very important in modern medical treatment: a) How is Giardia, a eukaryotic pathogenic parasite, affected by penicillin? Explain your answer. b) Is it beneficial to use sulfonamide and trimethoprim at the same time to treat an infection? Motivate your answer.The Petri Dish method is used in microbiology to raise bacteria in: a) rapid growth b) pure culture c) septic environment d) all of the above 2. What is the difference between antiseptic and sanitization?3. In order to prevent any kind of contamination the medium must be _________ before placing it in the Petri dish. a) lyophilized b) pasteurized c) autoclaved d) distille-For each item listed below, select a sterilant that you feel is the most suitable and effective for that item. Discuss why you selected each sterilant.? A) plastic Petri dishes to be used for nutrient media B) glass tubes of bacterial cultures to be discarded C) sterile milk D) dozens of reusable glass pipets E) bone tissue for grafting F) room air G) hospital mattresses H) biopsy tissue for histology analysis I) plastic respiratory therapy equipment and arthroscopes J) vaccines
- The difference in the colony appearance of bacteria cells growing on mannitol salt agar is detected by a) methyl blue b)methyl red c) phenol d) eosin e) salt .Is the Mueller-Hinton Agar (MHA) a complex or defined medium? Explain based on its composition. Is MHA a A) differential, B) selective, C) both differential and selective media, or D) neither? Explain based on what kind of microorganisms it allows to grow.What is the purpose of the vial that does not contain chara? (the solution with chara turned green showing that it is neutral) (the btb solution was yellow so it was acidic)