Answer:
one of its nitrogens through transamination of oxalacetate to form asparate and returns fumarate to that cycle.
Step-by-step explanation:
The urea cycle is linked to the citric acid cycle by fumarate and by aspartate, which can be con- verted to malate by transamination (see Figure 23.22). ... Aspartate and arginosuccinate are the amino acids that link the two pathways. Aspartate is made by transamination of OxaloacetatA.