One generation passes away, and
another generation comes: but the
earth abides forever.


Ecclesiastes 1:4

Chapter Outline
26.1 The Two Major Pathways of Biological N Acquisition
26.2 The Fate of Ammonium
26.3 Escherichia coli Glutamine Synthetase: A Case Study in Enzyme Regulation
26.4 Amino Acid Biosynthesis
26.5 Metabolic Degradation of Amino Acids

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