The bacterium E. coli is capable of performing aerobic respiration, anaerobic respiration, and fermentation. When would it perform each process and why? How is ATP made in each case?
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The bacterium E. coli is capable of performing aerobic respiration, anaerobic respiration, and fermentation. When would it perform each process and why? How is ATP made in each case?
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- Yeast are facultative anaerobic organisms that can make ATP by aerobic respiration if oxygen is present, but are also capable of switching to fermentation under anaerobic conditions. For thousands of years, humans have used yeast, such as Saccharomyces cervesisiae, to ferment grapes (starch sugar) to make wine (alcoholic beverage). Four batches of wine were made following the contents and conditions listed in the table below, Contents and Conditions of Four Batches of Wine Yeast Solution Water Grape Solution Batch Added Container (L) (L) (L) Lid 1 40 0.0 8 оpen 2 40 0.2 8 closed 40 0.2 8. оpen 4 40 0.2 closed 9. The yeast (Saccharomyces cerevisiae) would produce the greatest amount of ATP is the batch of wine numbered 1 4 D. The highest alcohol (ethanol) content would be found in the batch of wine numbered 02 3Why is aerobic respiration often performed by multicellular eukaryotes while anaerobic respiration and fermentation performed by unicellular prokaryotes?coliis a species of bacteria that, under the appropriate conditions, can grow using fermentation, anaerobic respiration, or aerobic respiration. This is one example of how E. colihas a greater metabolic capability than we humans, who can only survive using aerobic respiration, and who can perform fermentation for short periods of time. Consider the relative energy yield and efficiency of these three processes. Imagine you grow three cultures of E. coli as follows: A: Fermentation B: Anaerobic respiration C: Aerobic respiration You provide each culture with sufficient glucose in order to get each culture to produce the same biomass, i.e., the same amount of E. coli cells. In order to accomplish this, which culture would need to consume the greatest amount of glucose? Group of answer choices A. Each culture would need to consume the same amount of glucose to produce the same biomass B: Aerobic respiration C: Anaerobic respiration D: Fermentation
- Escherichia coli O157:H7 is a foodborne pathogen and can cause serious illness in humans by producing toxins that can severely damage the lining of intestines and kidneys. What are the oxygen requirements of coli? What result would you observe in the MTM agar deep test? Explain. Research on the growth requirements of this bacterium is required. What is the role of oxygen and cytochrome c oxidase in aerobic respiration? Why does the nitrate reduction tube turn red after the addition of zinc? Clostridium tetani is a common soil bacterium and causes tetanus. Would you expect tetani to possess the enzyme catalase? Explain. Research on the growth requirements of this bacterium is required.What is the primary difference between lactic acid fermentation and alcoholic fermentation? lactic acid produced CO2, whereas alcoholic fermentation does not alcoholic fermentation produces O2, whereas lactic acid does not alcoholic fermentation produces CO2, whereas lactic acid does not alcoholic fermentation is an aerobic process, whereas lactic acid fermentation is an anaerobic processa) What is the difference between aerobic and anaerobic respiration? b) What pathway do they have in common? c) How do the byproducts of fermentation differ among organisms such as yeast, bacteria and animals?
- Is it possible to perform aerobic fermentation using yeast? Explain why and compare the fermentation pathway with anaerobic pathway.A chemolithoautotroph is respiring using only iron (Fe3+) and nitrite (NO2-). This bacterium does not consume organic molecules. How does this organism make NADH?A chemolithoautotroph is respiring using only iron (Fe3+) and nitrite (NO2-). This bacterium does not consume organic molecules. Describe a result of this organism’s metabolic pathways that could be beneficial to another organism (of any type) living in close proximity
- Yeast produces carbon dioxide gas. Therefore, based only on this information, can we tell whether the yeast were using aerobic cellular respiration or Anaerobic (ethanol) fermentation? Yes or No If not, what additional information would we need to know to tell whether the yeast used aerobic respiration or anaerobic (Ethanol) fermentation?What is one difference between fermentation and anaerobic respiration? Since neither requires oxygen, why would a microbe select one of these versus the other? Name a specific microbe which uses fermentation and a specific microbe which uses anaerobic respiration.Escherichia coli is a facultative anaerobe that ferments sugars. In the absence of oxygen, it does not use its electron transport chain but can still use an F1F0-ATPase. In the presence of oxygen, it respires oxygen through the electron transport chain. In the presence of oxygen, how does E.coli obtain its three energy intermediates?