Nitrogen assimilationMicrobial biosynthetic processes require: Which of the following molecules links glycolysis with the TCA cycle, and also serves as a precursor for many biosynthetic products? Which of the following is NOT correct regarding secondary metabolites produced by freeliving microbes? They are sources of carbon, nitrogen, and other elements in anabolic pathways. The term "genome degeneration" refers to:
microBio 15 Flashcards | Quizlet
Microbial biosynthetic processes require: Which of the following molecules links glycolysis with the TCA cycle, and also serves as a precursor for many biosynthetic products? Which of the following is NOT correct regarding secondary metabolites produced by freeliving microbes?
They are sources of carbon, nitrogen, and other elements in anabolic pathways. The term "genome degeneration" refers to: The Calvin cycle is essentially: Which pathway is utilized for carbon fixation in chloroplasts and cyanobacteria? Cyanobacteria are believed to generate the majority of oxygen gas in Earth's atmosphere.
What allows them to produce oxygen? Which technique did Melvin Calvin use to elucidate the intermediates of phototrophic carbon fixation in the chloroplasts of Chlorella?
Which of the following statements is NOT true about Rubisco? All species contain the same number of large and small subunits. Where is the catalytic site of Rubisco located? What types of bacteria perform the reductive pentose phosphate cycle to fix CO2?
How many turns of the Calvin cycle does it take to provide one molecule of glyceraldehyde3phosphate into the biosynthesis of glucose? Rubisco catalyzes the reaction: What is the most sensitive method to determine the presence of an isotope such as in a sample?
The most ancient CO2 fixation pathway in methanogens is: The most ancient CO2 fixation pathway in anaerobic phototrophic bacteria and archaea. How does the reductive reverse TCA cycle participate in carbon fixation? All of the above. What kind of reaction is the formation of oxaloacetate from phosphoenolpyruvate?
Which of the following is the reducing agent in the saturation step of polyketide biosynthesis? Why do most fatty acids contain an even number of carbon atoms? Both A and B are correct. Many of the antibiotics and antitumor agents isolated from Streptomyces species are: Which of the following is NOT correct regarding the broadspectrum antibiotic erythromycin?
Which of the following is NOT correct about fatty acid biosynthesis? Many singlecomponent enzymes are involved. Which of the following is NOT correct regarding unsaturation in certain fatty acids? Low temperatures favor fewer unsaturated fatty acids. Industrial nitrogen fixation is achieved through the Haber process in which: N2 is hydrogenated by CH4 at extreme temperature and pressure.
Which pair is NOT matched correctly? NifL—forms a twocomponent signal transduction system with NtrC. Gene expression of nitrogenase through NtrC is downregulated in high concentrations. Which of the following is NOT correct regarding nitrogen assimilation into biomass? It is easy for living organisms to assimilate nitrogen due to its great stability.
Biological nitrogen fixation is energetically expensive. The enzyme nitrogenase is inhibited by oxygen. Nitrogenase activity is protected by the following mechanism: The amino acid biosynthetic pathways are designated as families. Which family generates only one amino acid? Based on the number of enzymes involved in its biosynthesis, which of the following is the most complex amino acid specified by the genetic code?
Chorismate is used in a branched pathway to synthesize: Which molecules use 5phosphoribosyl1pyrophosphate PRPP in their biosynthesis?
Which of the following molecules provides a way to simultaneously assimilate one carbon atom and one nitrogen atom during purine biosynthesis? Which of the following is correct regarding the biosynthesis of purines and pyrimidines? Which of the following drugs is a nonribosomal peptide antibiotic? Which of the following is true of tetrapyrrole biosynthesis?
Which of the following is the foundation of most biologically active tetrapyrrole derivatives? The alternate origin of pyrrole rings in purple bacteria consists of: