Which answer would score higher? Not sure where to start? Explain this Answer A Excess amino acids are deaminated in the liver, forming ammonia. The liver immediately converts the ammonia to urea. The kidneys remove urea from the blood and excrete it in urine. Answer B Excess amino acids are deaminated in the liver. Urea then enters the blood. The kidneys remove urea from the blood and excrete it in urine.