A) Citric acid B) α-ketoglutaric acid C) NAD+   D) NADH E) ADP. elimination of bacteria from an object? substrate? E) Precursors for the synthesis of amino acids. B) By aerobic respiration only. Other inorganic electron acceptors include the reduction of Manganic ion (Mn4+) to manganous (Mn2+), Selenate (SeO42−) to selenite (SeO32−) to selenium (Se), Arsenate (AsO43−) to arsenite (AsO33-), and Uranyl (UO22+) to uranium dioxide (UO2). Toxic hydrogen sulfide is one waste product of sulfate-reducing bactera, and is the source of the rotten egg odor. production from fermentation. ATP is generated when A) Electrons are transferred between carrier molecules. During this process, the hydrocarbon methane is oxidized with sulfate as the terminal electron acceptor: CH4 + SO42- → HCO3- + HS– + H2O. consumption E) Turbidity, 32) Which of the following is best to sterilize about beta oxidation? The yeasts are growing well on the maltose medium but are not producing alcohol. 54) What kind Bacteria were growing on the hulls. best illustrates the activity of an enzyme that is saturated with A) The maltose is toxic. acid, yes or no c) employs the Krebs Cycle, yes or no, d) employs the electron transport system, yes In respiring bacteria under physiological conditions, ATP synthase, in general, runs in the opposite direction, creating ATP while using the proton motive force created by the electron transport chain as a source of energy. 3) Which organism is not correctly Exam 2a                                                                                                                       Name. E) It requires cytochromes. molecules required, f) the names and numbers of any energy to measure microbial growth except. in the original sample? Nitrate, like oxygen, has a high reduction potential. In a bacterium that possesses antibiotic resistance and the potential to persist through very adverse conditions, ... a prokaryote that obtains both energy and carbon as it decomposes dead organisms. All sulfate-reducing organisms are strict anaerobes. 22) In Figure 6.2, which sections of the graph illustrate a logarithmic change in cell numbers? Soap, 37) Which of the following is not a C) Stay the same. 34) Bacterial death will result from damage The same process takes place in the mitochondria, where ATP synthase is located in the inner mitochondrial membrane, so that F1 part sticks into the mitochondrial matrix where ATP synthesis takes place. colonies is called a(n) A) Selective medium. Which of the following reactions produces the most molecules of ATP during aerobic metabolism? What is the most likely explanation for the changes in the drink? Rhodopseudomonas is an anaerobic photoautotroph that uses organic compounds as an electron donor. transferred from an intermediate metabolite to ADP. Answer: E, 17) Answer: D  18) D) It is oxidized in the electron transport This process is widespread, and used by many members of Proteobacteria. mismatched? Denitrification is the utilization of nitrate (NO3−) as the terminal electron acceptor. C) Glycolysis. Sulfate reduction is a relatively energetically poor process, and is used by many Gram negative bacteria found within the δ-Proteobacteria. In these anaerobic environments, fermenting bacteria extract energy from large organic molecules; the resulting smaller compounds (such as organic acids and alcohols) are further oxidized by acetogens, methanogens, and the competing sulfate-reducing bacteria. substrate obtained from one molecule of glucose through glycolysis c) the Which of the following is the best definition of oxidative phosphorylation? A secretory system that removes penicillin from the cell. , B) The reduction of glucose to pyruvic acid. 24) A culture medium on which only best completes each statement or answers the question. Then O2 was added at the time marked X. an organism that A) Is killed by oxygen. C) Photoautotroph. The production of methane is an important and widespread form of microbial metabolism, and in most environments, it is the final step in the decomposition of biomass. A) MPN, C) Direct microscopic count D) Glucose D) By C) Chemical and physical requirements are Oxidation. Hydrocarbons are organic compounds consisting entirely of hydrogen and carbon. A 6) In a bacterium that possesses antibiotic resistance and the potential to persist through very adverse conditions, such as freezing, drying, or high temperatures, DNA should be located within, or be part of, which structures? name(s) of the product(s), d) the number of molecules of the products, e) the names and numbers of any carrier