Several key enzymes are essential to nitrogen metabolism in plants and animals. Choose the three statements below that BEST describe these enzymes
A. Fertilizer contains ammonium nitrate, which is used by glutamine dehydrogenase to assimilate nitrogen into amino acids for heterotrophs to consume as a source of nitrogen
B. The enzymes glutamine synthase and glutamate synthetase work together to assimilate ammonium ion into amino acids to maintain energy balance
C. The plant enzyme glutamine synthetase incorporates nitrogen in the form of ammonium ion into glutamate to form glutamine, and thereby use ATP as an energy source for nitrogen assimilation.
D. Plants and bacteria need the enzyme glutamate synthase to replenish glutamate using e and alpha-ketoglutarate as substrates in order to replenish glutamate for the glutamine synthetase reaction.
D. Aminontransferases are enzymes that shuttle citrate and ammonium ion between the mitochondrial matrix and the cytosol, which is essential for nitrogen fixation a assimilation
E. Nitrogenase is an enzyme in the Haber reaction that converts ~ 15% of the nitrogen in air into ammonium ion during each cycle of the reaction.
F. Glutamate dehydrogenase is responsible for converting glutamate to alpha- ketoglutarate, and in the process, releasing ammonium ion.
G. Glutamate dehydrogenase is an important enzyme in plant roots because it converts the low amount of ammonium ion generated by Rhizobium bacteria into alpha-ketoglutarate to produce glutamate.