BioChemistry MCQs

Q1: A 2-month-old infant presents with vomiting, poor feeding, and lethargy. Labs reveal elevated ammonia and orotic acid in the urine. What enzyme is likely deficient?




Q2: A child with developmental delay and self-mutilating behavior has orange-colored sand-like crystals in the diaper. What enzyme is deficient?




Q3: A 2-month-old infant presents with vomiting, poor feeding, and lethargy. Labs reveal elevated ammonia and orotic acid in the urine. What enzyme is likely deficient? (Q3)




Q4: A child with developmental delay and self-mutilating behavior has orange-colored sand-like crystals in the diaper. What enzyme is deficient? (Q4)




Q5: A 2-month-old infant presents with vomiting, poor feeding, and lethargy. Labs reveal elevated ammonia and orotic acid in the urine. What enzyme is likely deficient? (Q5)




Q6: A child with developmental delay and self-mutilating behavior has orange-colored sand-like crystals in the diaper. What enzyme is deficient? (Q6)




Q7: A 2-month-old infant presents with vomiting, poor feeding, and lethargy. Labs reveal elevated ammonia and orotic acid in the urine. What enzyme is likely deficient? (Q7)




Q8: A child with developmental delay and self-mutilating behavior has orange-colored sand-like crystals in the diaper. What enzyme is deficient? (Q8)




Q9: A 2-month-old infant presents with vomiting, poor feeding, and lethargy. Labs reveal elevated ammonia and orotic acid in the urine. What enzyme is likely deficient? (Q9)




Q10: A child with developmental delay and self-mutilating behavior has orange-colored sand-like crystals in the diaper. What enzyme is deficient? (Q10)




Q11: A 2-month-old infant presents with vomiting, poor feeding, and lethargy. Labs reveal elevated ammonia and orotic acid in the urine. What enzyme is likely deficient? (Q11)




Q12: A child with developmental delay and self-mutilating behavior has orange-colored sand-like crystals in the diaper. What enzyme is deficient? (Q12)




Q13: A 2-month-old infant presents with vomiting, poor feeding, and lethargy. Labs reveal elevated ammonia and orotic acid in the urine. What enzyme is likely deficient? (Q13)




Q14: A child with developmental delay and self-mutilating behavior has orange-colored sand-like crystals in the diaper. What enzyme is deficient? (Q14)




Q15: A 2-month-old infant presents with vomiting, poor feeding, and lethargy. Labs reveal elevated ammonia and orotic acid in the urine. What enzyme is likely deficient? (Q15)




Q16: A child with developmental delay and self-mutilating behavior has orange-colored sand-like crystals in the diaper. What enzyme is deficient? (Q16)




Q17: A 2-month-old infant presents with vomiting, poor feeding, and lethargy. Labs reveal elevated ammonia and orotic acid in the urine. What enzyme is likely deficient? (Q17)




Q18: A child with developmental delay and self-mutilating behavior has orange-colored sand-like crystals in the diaper. What enzyme is deficient? (Q18)




Q19: A 2-month-old infant presents with vomiting, poor feeding, and lethargy. Labs reveal elevated ammonia and orotic acid in the urine. What enzyme is likely deficient? (Q19)




Q20: A child with developmental delay and self-mutilating behavior has orange-colored sand-like crystals in the diaper. What enzyme is deficient? (Q20)




Q21: A 2-month-old infant presents with vomiting, poor feeding, and lethargy. Labs reveal elevated ammonia and orotic acid in the urine. What enzyme is likely deficient? (Q21)




Q22: A child with developmental delay and self-mutilating behavior has orange-colored sand-like crystals in the diaper. What enzyme is deficient? (Q22)




Q23: A 2-month-old infant presents with vomiting, poor feeding, and lethargy. Labs reveal elevated ammonia and orotic acid in the urine. What enzyme is likely deficient? (Q23)




Q24: A child with developmental delay and self-mutilating behavior has orange-colored sand-like crystals in the diaper. What enzyme is deficient? (Q24)




Q25: A 2-month-old infant presents with vomiting, poor feeding, and lethargy. Labs reveal elevated ammonia and orotic acid in the urine. What enzyme is likely deficient? (Q25)