1. Urea contains two nitrogen atoms. From which two molecules in the urea cycle do these come from? (4 pts) 2. Adding on

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1 Urea Contains Two Nitrogen Atoms From Which Two Molecules In The Urea Cycle Do These Come From 4 Pts 2 Adding On 1 (188.74 KiB) Viewed 70 times

1. Urea contains two nitrogen atoms. From which two molecules in the urea cycle do these come from? (4 pts) 2. Adding one-carbon groups to organic molecules can be done in several ways, including by carboxylase-catalyzed reactions. What are three (3) one-carbon donors, including coenzymes and ions, that can be used to do this? (We've seen one-carbon donors in fatty acid biosynthesis and amino acid metabolism.) (6 pts) 3. The following amino acids are considered onessential. Blanine artic acid and turcine Crom what