#Question id: 966
#Unit 1. Molecules and their Interaction Relevant to Biology
In the urea cycle the nitrogen atoms originate from ________.
#Question id: 967
#Unit 1. Molecules and their Interaction Relevant to Biology
At the subcellular level where does the urea cycle occur?
#Question id: 968
#Unit 1. Molecules and their Interaction Relevant to Biology
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. Molecules and their Interaction Relevant to Biology
In mammals, most amino acids undergo deamination in the ________.
#Question id: 970
#Unit 1. Molecules and their Interaction Relevant to Biology
The first nucleotide product in the de novo biosynthetic pathway of purines is
#Question id: 971
#Unit 1. Molecules and their Interaction Relevant to Biology
What is the source of the nitrogen atoms 3 and 9 during the de novo biosynthesis of purines?