Amino acids that enter the liver have several important metabolic routes 1. Site of plasma protein biosynthesis. Amino acids past through blood stream to the tissues for protein synthesis there. Amino acids used for nucleotides, hormones, porphyrins 4. Converted to phospholipids and triacylglycerols and transported as plasma lipoproteins 6.
Some organisms have brown fat.
Lactic acid fermentation is used until muscle glycogen is gone. ATP used for gluconeogenesis in the liver. C. Dependent on incoming glucose.