题目内容

All of the following are intermediates formed by amino acid degradation, except:

A. α-Ketoglutarate
B. Oxaloacetate
C. Fumarate
D. Citrate

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Which of the following amino acid cannot undergo transamination?

A. Lysine
B. Alanine
C. Aspartic acid
D. Glutamic acid

Ammonia is transported from muscles to liver mainly in the form of:

A. Free ammonia
B. Glutamine
C. Asparagine
D. Alanine

Which of the following pathways occurs in part in the mitochondria and in part in the cytoplasm?

A. Urea cycle
B. TCA cycle
C. Glycolysis
D. Oxidative phosphorylation

Which of the following does not take part in the human urea cycle?

Arginine
B. Aspartate
C. Arginosuccinate
D. Urease

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