Ammonia Metabolism and Toxicity — MCQs

Which of the following statements about carbamoyl phosphate synthase is incorrect?

Because free ammonia in the blood is toxic to the body, it is transported in which of the following non-toxic forms?

Ammonia is detoxified in brain to :

A newborn presents with metabolic acidosis, high ammonia, and orotic acid in urine. Which enzyme deficiency is most likely?

Glutamine is increased in CSF, blood & urine WITHOUT elevated orotic acid in which defect:

Most common enzyme deficiency in the urea cycle is:

Which defect in the urea cycle is an X-linked disease?

A patient with chronic liver disease presents with confusion and asterixis. Ammonia levels are elevated. Diagnosis?

A 2-month-old infant presents with vomiting, lethargy, and metabolic acidosis. Blood tests reveal elevated levels of ammonia. What is the most likely diagnosis?

Which cofactor is primarily associated with the activity of glutamate dehydrogenase?