bacteria (Mustard + 0.5% acetic acid or Mustard +1% acetic acid)
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- TRUE OR FALSE Coconut oil will give (positive) result to Molisch test.which antiseptic do you think will be most effective against the probiotic? Why?“Belinda!” called Kyle, running to catch up to her. Belinda turned around and waited for him. “Are you heading to the lab right now?” asked Kyle. “Yes.” she said. “I want to look over the Gram stain protocol one more time before we go in.” “Yeah, good idea. I’ve been trying to memorize the steps. But it’s hard.” Belinda and Kyle spent the twenty minutes remaining before the start of lab going over Chapters 3 and 4 of their textbook, which listed the steps of the Gram stain and how the staining results relate to the structure of the bacterial cell wall. Kyle and Belinda took a sample of the bacteria provided by their instructor and each performed the Gram stain. They focused on their slides with the oil immersion lens. “Got it!” they said almost simultaneously, grinning proudly. “So, what do you have?” asked Belinda. “I have Gram-positive bacilli” announced Kyle with an air of triumph. “Huh? I have Gram-negative bacilli.” “That’s not right, we used the same sample!…
- Choose the combination of answers that most accurately completes the statement.Which of the following is an approved sterilant? a. chlorhexidine c. ethylene oxide b. betadyne d. ethyl alcoholIn paragraph form (about 2-3 long paragraphs), how would you characterize and identify antimicrobial agents from root samples using chromatography and electrophoresis? Please be in full details.In paragraph form (about 2-3 long paragraphs), how would you characterize and identify antimicrobial agents from root samples using x-ray crystallography and infrared spectroscopy? Please include the principles and the details and type specifically for the antimicrobial agents of the methodology.
- A bottle filled with previously moistened mustard seeds and water was screw-capped tightly and kept in a corner. It blew up suddenly after about half an hour. Give justification.You are told to analyze the purity of your product with TLC. Which of the following TLC plates would indicate a pure product? Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a A TLC plate where the product lane has one spot with an Rf value that exactly matches that of the starting material. b A TLC plate where the product lane has one spot which has a lower Rf value than the starting material. с A TLC plate where the product lane has two spots, one with a higher Rf value than the starting material and one with a lower Rf value. d A TLC plate where the product lane has one spot which has a higher Rf than the starting material.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 possible
- When a disinfectant or antiseptic's effectiveness is expressed as a phenol coefficient, a number ____ 1.0 means the chemical agent is more effective than phenol. less than greater than equal toIodine in Ziehl Neelson’s staining serve as the mordant. True or false underline the word that is falseWhat is the difference between an antiseptic and a disinfectant? Can the same chemical be used for both?