Nitrosomonas is a photophobic (light-avoiding) chemoautotrophic bacterium that converts ammonia into nitrite. Explain how the organism can fix CO2 via the Calvin cycle in the absence of sunlight.
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Nitrosomonas is a photophobic (light-avoiding) chemoautotrophic bacterium that converts ammonia into nitrite. Explain how the organism can fix CO2 via the Calvin cycle in the absence of sunlight.
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- Prochlorococcus marina, one of the smallest prokaryotes capable of oxygenic photosynthesis, uses which of the following inorganic substrate molecules during photosystem II of photosynthesis? hydrogen sulfide diatomic oxygen elemental sulfur carbon dioxide glucoseContrast autotrophy in the following phototrophs:cyanobacteria; purple and green sulfur bacteria; Chloroflexus.A chemolithoautotroph is respiring using only iron (Fe3+) and nitrite (NO2-). This bacterium does not consume organic molecules. How does this organism make NADH?
- The common name for species like Anabena is blue-green algae. This group of bacteria are capable of photosynthesizing. Do they contain chloroplasts? Explain.In anaerobic respiration, what will happen if a bacterium uses nitrates as the terminal electron acceptors? nitrogenlaxation nitrification denitrification both nitrogen fixation and nitrificationWhich of the following pathways is used to fix inorganic carbon into organic form (like methane), by the anaerobic, chemoautotrophic archaeobacterium Methanococcus jannaschii? the reductive acetyl-CoA pathway the Hill reaction the Krebs cycle the Calvin cycle oxygenic photosynthesis
- You have discovered a cyanobacterium with only photosystem I (it has no photosystem II). This bacterium is unable to fix CO2. How does this microorganism make ATP and reducing power?Imagine you are trying to use an organism to remove organic matter in a wastewater treatment plant (i.e., poop). You would like to maximize the amount of waste consumed while also minimizing the amount of cells produced. Assuming these organisms exist and all other things are equal, what combination of chemoorganotrophic organism and environment would make the most sense to use? An organism that only has the Entner-Duoduroff pathway under anaerobic conditions. This was a trick question – the organism would have to be a chemolithotroph since it is consuming a chemical. An organism that only has the Entner-Duoduroff pathway under aerobic conditions. An organism that only has the Embden Meyer Parnas pathway under anaerobic conditions. An organism that only has the Embden Meyer Parnas pathway under anaerobic conditions.Ubiquinone and cytochrome c are both electron carriers that are easily diffused. Say whether it is true or false, if it is wrong to justify it
- Explain why electron transport in purple photosynthetic bacteria follows a circular path.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 proximityChemolithotrophs meet their energy needs by oxidizing organic food molecules. True False Which of the following events does not occur during the energy-investment phase of glycolysis? Hexokinase catalyzes the transfer of a phosphate group from ATP to glucose to form glucose-6-phosphate. Phosphofructokinase catalyzes the isomerization of glucose-6-phosphate to fructose-6-phosphate. Fructose-bisphosphate aldolase cleaves Fructose-1,6-bisphosphate into two different three-carbon sugars. Dihydroxyacetone phosphate can be converted to glyceraldehyde-3-phosphate with the help of the enzyme triose phosphate isomerase.