Using two high-energy bonds, arginosuccinate synthetase joins ...

[Shelles]

Using two high-energy bonds, arginosuccinate synthetase joins aspartate and citrulline to produce arginosuccinate in the cytosol. This is the rate-limiting step in ____ synthesis.
 A) pyrimidine
  B) purine
  C) urea
  D) creatine

Question 2

Urea synthesis occurs partly in the mitochondria and partly in the cytosol of the ____.
 A) glomeruli
  B) tubules
  C) enterocytes
  D) hepatocytes

[brittrenee]

Answer to Question 1

C

Answer to Question 2

D