#Question id: 966
#Unit 1. Structure and Function of Biomolecules
In the urea cycle the nitrogen atoms originate from ________.
#Question id: 967
#Unit 1. Structure and Function of Biomolecules
At the subcellular level where does the urea cycle occur?
#Question id: 968
#Unit 1. Structure and Function of Biomolecules
In the urea cycle which molecule is transported from the mitochondrial matrix to the cytosol as ornithine is transported in the opposite direction?
#Question id: 969
#Unit 1. Structure and Function of Biomolecules
In mammals, most amino acids undergo deamination in the ________.
#Question id: 970
#Unit 1. Structure and Function of Biomolecules
The first nucleotide product in the de novo biosynthetic pathway of purines is
#Question id: 971
#Unit 1. Structure and Function of Biomolecules
What is the source of the nitrogen atoms 3 and 9 during the de novo biosynthesis of purines?