Which statement is supported by the experiment below? Select all the apply. 1% NaCl agar plate 6.5% Nacl agar plate 10% Nacl agar plate 25% Nacl agar plate E. coli E. coli as 3 Was 3 E. coli Was 3 E. coli S. aureus S. aureus S. aureus S. aureus H. salinariumilal H H. salinariumile H H. salinarium H. salinarium S. aureus is halotolerant. а. b. Both S. aureus and E. coli are halotolernt. O c. Both S. aureus and H. salinarum are halophiles. d. H. salinarum is a halophile.
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- The number of bacteria in saliva samples was determined by collecting the saliva, making serial dilutions, and inoculating nutrient agar by the pour plate method. The plates were inoculated aerobically for 48 hours at 37°C. What can you conclude from this data? Why? Mouthwash CFU per ml in salvia Before Use After Use Listerine 2.22 x 107 1.22x107 Schmidts Mouthwash 2.42 x 107 3.22x105 Biotene Mouthwash 3.21 x 107 2.12 x106Does the current study’s results regarding compositional differences using pasteurized veruses. non-pasteurized milk make sense with previous work? please i need the answer from the articleIf the concentration of E. coli in a broth is between 104 and 106 cells per mL, the best way determine the precise number of living cells in the sample, would be toa) use a counting chamber.b) plate out an appropriate dilution of the sample on nutrient agar.c) determine cell number by using a spectrophotometer.d) Any of these three methods would be satisfactory.e) None of these three methods would be satisfactory.
- For each of the following aspects, compare and contrast the EnteroPluri-Test System to the API® 20E System for Enterobacteriaceae identification. a. time requirement b. specimen preparation c. tests utilized d. anaerobic conditions e. interpretation of resultsHello, I want you pleaseeee to make a dichotomous key based on provided experiments to identify a an unknown bacterium mixture. It can be E. coli, B. Bulgaris, B subtilis, b aerogenes, m leuteus, s. Aureus, and s epidermisis. Make it based on these possible experiments: phenol red broth, mr/vp test, catalase test, oxidase test, nitrate reduction test, citrate utilization test, Malonate utilization test, decarboxylation test, starch hydrolysis test, dna hydrolysis test, lipid hydrolysis test, gelatin hydrolysis test, urea hydrolysis, SIM medium, triple sugar iron agar test, blood agar test. So far we have run a MAC agar and PEAA plate of the bacteriumDescribe what the plate in each scenario looks like: A. Bacteria grows on mannitol salt agar and is negative for mannitol fermentation B. Bacteria grows on EMB agar and is positive for lactose fermentation C. Bacteria grows on MacConkey agar and is negative for lactose fermentation
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- The methodology for enumerating coliforms using the most probable number method calls for presumptive and confirmatory steps. Discuss the reasons why one cannot go directly to inoculation of brilliant green lactose bile broth after homogenizing the sample. 2. Explain why a green metallic sheen is formed when E. coli is grown on Eosin Methylene Blue AgarCan someone help me make a dichotomous key for for the species listed below Bacillus megaterium, Citrobacter freundii, Clostridium sporogenes, Enterobracter aerogenes, Escherichia coli, Proteus vulgaris, Pseudomonas aeruginosa, Salmonella enterica (Typhimurium), Serratia marcescens, Shigella sonnei Using these tests: TSA plates, Gram stain, catalase test, citrate slants, gelantinase tubes, oxidase test, PR Glucose broths, PR lactose Broths, PR sucrose broths, SIM tubes,Urease slants (not all but most)Given the scenario, compute for the total volume of the culture media solution (milliliter or liter) and dehydrated media (grams). Scenario: The students of a Microbiology class were tasked to transfer or subculture a pure culture of Escherichia coli bacterium in five 7 mL nutrient broth and five petri dishes of nutrient agar with 20 mL capacity each. Based on the instruction bottles for nutrient broth and nutrient agar, preparation of the culture media is as follows. Nutrient broth: 8 g/liter Nutrient agar: 28 g/liter Formula: C1V1 = C2V2 *Concentration *Volume Computation: What are the answers to the following. Weight in grams of nutrient broth: _________ Distilled water in mL for nutrient broth: __________ Weight in grams of nutrient agar __________ Distilled water in mL for nutrient agar: ____________