Which one of the following bacteria should be the most energy-efficient:
aerobic bacteria |
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denitrifying bacteria |
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iron reducing bacteria |
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sulfate reducing bacteria |
Answer: Iron reducing bacteria should be the most energy-efficient. Iron reducing bacteria (IRB), for example, are heterotrophic facultative anaerobes that reduce ferric ions to ferrous ions under anaerobic conditions.
Which one of the following bacteria should be the most energy-efficient: aerobic bacteria denitrifying bacteria iron...
Which of the following regulatory mechanisms is the most energy efficient? a. Alternative splicing b. Translation regulation c. Transcriptional regulation d. Regulation of RNA half-life e. Regulation of protein localization
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The most abundant bacteria in the colon is Bacteroides Lactobacillus Select one: O True O False Energy production is less efficient when oxygen is present. Select one: O True False
Which of the following does NOT occur when aerobic bacteria are deprived of oxygen? A. Excess of acetyl-CoA inhibits citric acid (Krebs) cycle. B. Electrons build up in electron transport chain. C. Excess of NADH inhibits citric acid (Krebs) cycle. D. Excess of pyruvic acid inhibits glycolysis.
Which of the following yields the greatest energy for a cell: fermentation, anaerobic respiration, or aerobic respiration? Which yields the least? Why?
4. Some treatment techniques for acid mine drainage rely on the use of sulfate-reducing bacteria to convert sulfuric acid to H2S in order to reduce corrosivity. Sulfate-reducing bacteria obtain energy by the following reaction: 7H+ + CH3C00- + S0 + 2H2CO3(aq) + H2Saq + 2H20 a. (10 points) Calculate the standard free energy change for the reaction as written b. (8 points) Calculate the equilibrium constant at 25°C for the reaction as written
1) A researcher discovers a new species of bacteria that obtains its energy from other organisms and its carbon from the atmosphere. This species can be categorized based upon its mode of nutrition as a: chemoheterotroph, photoautrotroph, photoheterotroph, or chemoautotroph? 2) A colony of antibiotic-resistant bacteria is mixed with a colony of antibiotic-sensitive bacteria. After a few days grown in the presence of antibiotics, all of the bacteria are resistant to the antibiotic. Which of these is most likely to...
Matching. Match the structure or enzyme on the right to the description on the left that is most appropriate. There is only one best answer. 1 point each Halophilic archaca 2. Substrate oxidation enzyme in Rusticyanin Menaquinone and Cytochrome c Activated form of sulfate reduced by Desulfovibrio 4 A Fluorescent cofactor in Cytochrome cy 5. Purple sulfur bacteria Alcohol dehydrogenase Found in denitrifying bacteria Ammonium monooxygenase 6. G. Adenosine phosphosulfate, APS Beggiatoa, Sulfonema, Isochromatium, Thiocapsa Sulfur granules Nitrite Reductase, Cytochrome...
are the following bacteria aerobic, anaerobic or facilitative anaerobes? E. Coli S. Epidermidis P. Mirabilis P. Putida
Which one of the following tests are similar to one another because they indicate that bacteria that can produce exoenzymes? a) DNAse and tryptophanase b) Lipase and DNase c) decarboxylase and casease d) lipase and oxidase If bacteria can make oligo 1,6 gucosidase it is also expressing....................... and you will need................. to prove it. a) DNAse, methyl red b) amylase, iodine c) Tryptophanase, iron d) casease, and no indicator I can ferment glucose and can grow in anaerobic environment via...
"The size of spherical aerobic bacteria is limited by the rate at which oxygen diffuses through water. A bacterium with a radius greater than roughly 10 micrometers is not able to obtain enough oxygen from the surrounding water to sustain itself. Given that the diffusion constant of oxygen in water is 8 �10^-10 m^2s^-1, how long does it take oxygen in water to diffuse an RMS distance of 10 micrometers?