Bacterium C had the lab results below. What can you tell me about the carbon food sources it ferments and the kind of end products it produces in anaerobic respiration?
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Bacterium C had the lab results below. What can you tell me about the carbon food sources it ferments and the kind of end products it produces in anaerobic respiration?
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- what does a negative result mean in an oxidase test?Select all that applies a)The bacteria may undergo anaerobic respiration b)The bacteria may have a cytochrome C oxidase c)The bacteria may undergo aerobic respiration d)The bacteria will not have cytochrome C oxidase e)None of the anwers are correctChopped garlic often contains C. botulinum endospores and iscommonly sold submerged in olive oil, which creates an anaerobicenvironment. What is required to be added to garlic sold in thismanner?a. sodium chlorideb. citric acidc. waterd. A warning label describing the symptoms of botulism.1. Select one product of anaerobic respiration or fermentation.2. It should include the following: a. Description of the Product b. Method/ Process of Creating the Product c. Uses/ Importance of the Product
- Why are the Methyl Red/Voges-Proskauer tests done after 48 hours of incubation?a) Readings taken at earlier time points may be different from readings taken at 48 hours b) Bacteria need 48 hours to process all the oxygen in the media c) Bacteria grow slowly in the MR/VP media d) K2HPO4 needs 48 hours to react with the acids produced by fermenting bacteriaAssume tu inoculated 100 facultative anaerobic cells unto nutrient agar and incubated the plate aerobically. You then inoculated 100 cells of the same species unto nutrient agar and incubated the second plate anaerobically. After incubation for 24 hours, you should theoretically have: A) More coloneis on the aerobic plate B) More colories on the anaerobic plate C) The same number of colonies on both paltes D) Fewer colonies on the anaerobic plateEx. 35 = Products Formed in Milk: The Litmus Milk Test (p.297) How does the litmus milk test work? What are the possible outcomes? What do these outcomes tell you about the bacterial metabolism? Ex. 36 = Test for Cytochrome c (Oxidase) and Catalase Activities (p. 303) How does the oxidase test work? What does it tell you about bacterial metabolism? How does the catalase test work? What does it tell you about bacterial metabolism? What do positive/ negative results look like for these tests?
- 3. You plate 3 different strains of the bacteria family Aspergillis on a MacConkey Agar plate. You notice that 2 have a yellow shade, 1 has a subtle pink color. Please interpret this information. Such as, the type of fermenters these bacteria are and what this says about their metabolism.1. On your groupmate's DCC plate, you can see mucoid bacterial colonies with clearings underneath. What all can they conclude based only on the DCC test? Select all that apply. a. The bacteria ferments glucose. b. The bacteria produces acid byproducts from fermentation. c. The bacteria can aerobically respire. d. The bacteria does not produce gas byproducts..I need help with Carbohydrate fermentation! Please indicate if each organism ferments the carbohydrate. indicate whether or not the phenol red indicator changes color and if it will produce gas. Organisms: Escherichia coli Alcaligenes faecalis Staphylococcus epidermidis Proteus vulgaris Carbohydrates: - glucose - lactose - sucrose Choose between the following results: Acid (yellow)/ no gas Acid (yellow)/ gas No acid (fuschia)/ gas No acid (fuschia)/ no gas.
- Which of the following is false about the TSI test? A. It looks for CO2 or H2S gas production B. Hydrogen sulfide precipitates our as black C. It can tell if sucrose or lactose is fermented D. It changes from red to yellow when acid is produced E. It tests for lactose, sucrose, glucose fermentationMicrobiology: Select which statements are true 1. if oxygen concentration in the lumen of the colon increases, this could decrease lumenal short chain fatty acid concentration 2. consuming diverse insoluble dietary fibers can promote increased digestive bacterial diversity, thus affecting the abundance and ratios of short chain fatty acids produced 3. fiber that is indigestible to humans is the most likely carbon source used for producing SCFAs 4. obligate anaerobes are more likely found in small intestine than in colon, because small intestine has higher levels of oxygen 5. less complex carbs (sucros, lactose, glucose,) are likely less abundant in the colon than in stomach or begging of small intestine.Which of the following experimental approaches is likely must complete picture of a particular cell's metabolism? a. NMR spectroscopey b. Metabolic inhibitors c. Mass spectroscopy d. Isotopic tracers