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Work Sheet 11
Protein Turnover / Ammonia Metabolism
1. Distinguish between the essential and non-essential amino acids.
2.
Define positive and negative nitrogen balance.
3.
List the roles of proteolysis (protein degradation).
4.
Describe the transaminase reactions for alanine and aspartic acid.
5.
List the compounds by which nitrogen is excreted.
6.
Draw the urea cycle, including enzymes.