MCQ – 89191

Question

A newborn experiences lethargy, vomiting, and tachypnea soon after birth. Laboratory examination reveals a metabolic acidosis with a large anion gap, ketosis, and hypoglycemia. The methylmalonic acid concentration is markedly increased in both the plasma and the urine. Which of the following reactions is most likely deficient in this patient:

A. Transamination

B.

Carboxylation

C.

Hydroxylation

D.

Isomerization

Show Answer

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