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- VI - BIOMOLECULES Instructions : - Answer the question properly. - Please do not copy here in Bartleby - Explain why did you choose that answer in 3-5 sentences. QUESTION : 1. Which of the following enzyme is responsible for the regulation of biological nitrogen fixation? A. Dinitrogenase reductase B. Dinitrogenase oxidase C. Phosphatase D. KinaseEnzymes act by reducing the activation energy of areaction. Describe several ways in which this isaccomplished.Although physiologically distinct, aerobic chemolithotrophsand chemoorganotrophs share a number of features withrespect to the production of ATP. Discuss these commonfeatures along with reasons why the growth yield (gramsof cells per mole of substrate consumed) of achemoorganotroph respiring glucose is so much higherthan for a chemolithotroph respiring sulfur
- Beer production requires an early period of rapid aerobic metabolismof glucose by yeast. Given that anaerobic conditions are necessary toproduce alcohol, can you explain why this step is necessary?Most enzymes do not operate at their biochemical optima in sidea cell. Explain why.The comparison of chymotrypsin and subtilisin active site geometries on the assumption that their similarities had catalytic importance has improved mechanistic knowledge of both enzymes (which they did not). Is this technique effective?
- biochemistry question, please show all work! As the result of a storm while on a three-hour boat tour, you have found yourself on an uncharted island with several other people. The (additional) bad news is that you and your fellow castaways have become infected with a previously unknown, lethally pathogenic organism, P. Fortunately, however, you have discovered a biochemistry laboratory on the island, and you begin to study the organism. In Organism P, the ATP synthase enzyme complex can synthesize ATP using a proton gradient, and can use ATP hydrolysis to generate a proton gradient. For Organism P you measure: pHinside = 8.5, pHoutside = 7.3, and membrane potential = –110 mV.a. Assumingthatthebacteriumisaspherewithadiameterof2.34μm,howmany “free protons” are present in the cell?b. Assuming [ATP] = 5 mM, [ADP] = 1 mM, and [Pi] = 2 mM, and the cellular temperature is 25°C, what is the minimum number of protons that must enter the cell to yield enough energy to synthesize an ATP from an…RECALL NADH is an important coenzyme in catabolic processes, whereas NADPH appears in anabolic processes. Explain how an exchange of the two can be effected.Tracing the Fate of CO2 During Photosynthesis 14C-labeled carbon dioxide is administered to a green plant, and shortly thereafter the following compounds are isolated from the plant: 3-phosphoglycerate, glucose, erythrose-4-phosphate, sedoheptulose-1 .7-bisphosphate, and ribose-5-phosphate. In which carbon atoms will radioactivity be found?
- Kinetics of enzymatic reactions: the dependence of the reactionrate on the concentration of enzyme and substrate, рН andtemperature. Kinetics of allosteric enzymesComparing chymotrypsin and subtilisin active site geometries on the assumption that their similarities have catalytic importance has improved mechanistic knowledge of both enzymes (which they did not). Can you evaluate this approach?ATP synthase of mitochondria: the structure and principles ofwork. F0and F1subunits of ATP synthase: their functional value
