A strictly fermentative bacterium produces ATP A. by glycolysis only. B. by photosynthesis only. O C. only in the absence of oxygen. D. only in the presence of oxygen. Clear my choice
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- Most oxidation reactions in microbial bioenergetics involve thea. removal of electrons b. addition of electrons c. addition of oxygen d. removal of oxygenChopped 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.These are enzymes that can sustain in a high hydrostatic pressure. * (Please choose one correct answer only) A. Piezohiles B. Halophiles C. Acidophiles D. Alkaliphiles E. Thermophiles
- In "Fermentation by Yeast" experiment, we aremeasuring the height of gas accumulation. Whatgas is it? A.002B. 0 c02C. OcD. 0 H2E.Water vapor The color of bromothymol blue in "AerobicRespiration in Beans" experiment was changingbecause soaked beans started to perform A.alcohol fermentationB.lactic acid fermentationC.cellular respirationD.photosynthesisThese enzymes require a temperature of 15 degree Celsius or lower needed for growth / optimal activity. * (Please choose one correct answer only) A. Thermophiles B. Cryophiles C. Halophiles D. PiezophilesWhich of the following statements is false? A. Sulfur-oxidizing bacteria may form hydrogen sulfide (H2S) as a product of the oxidation. B. Dissimilatory reduction of metals such as Fe3+ to Fe2+ represents anaerobic respiration. C. The nitrification reactions carried out by certain bacteria would be considered lithotrophy. D. Denitrification reactions would be considered anaerobic respiration.
- 2. An aerotolerant bacterium usually generates which of the following enzymes to detoxify reactive oxygen species? a. Superoxide dismutase b. Catalase c. Superoxide dismutase and Catalase d. Cytochrome c oxidase e. Nitrite reductase Your Explanation:Which of the statements is NOT TRUE about anaerobic respiration and fermentation? a. Anaerobic respiration has greater ATP output than fermentation. b. Both anaerobic respiration and fermentation does not require oxygen. c. Both anaerobic respiration and fermentation establish chemiosmotic gradients. d. Anaerobic respiration predominantly characterized by complete oxidation of substrate.For the electron transport chain, all are inhibitors except: Select one: O a. Antimycin A O b. fluoroacetate Oc. Amytal O d. NaN2
- Yeast is a facultative anaerobe. This means that alcohol fermentation takes place only if: a. the temperature is close to 37°C b. the atmosphere does not contain oxygen c. sugar is provided to the cells d. light is provided to the cells1. You set up two cultures with an equal amounts of Escherichia coli. You label one culture "A" and the other "B." Each culture is given 100mL of tryptic soy nutrient broth. You then take culture A and incubate it in the absence of oxygen and take culture B and incubate it in the presence of oxygen for one week. If E. coli is able to use both aerobic and anaerobic metabolism, the how would we classify it? Is it an obligate aerobe, obligate anaerobe, or a facultative anaerobe? Based on that information, which flask, A or B, would have more cells at the end of the week? Fully explain your answer.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..