NBME Explanations

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NBME Explanations

NBME 15 Questions and Answers

Discussion in 'USMLE Step 1' started by orthopod, May 24, 2015.

  1. Noobs

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    3yo girl with abdominal pain, constipation, and irritability for 1 month. Lives in 50-year-old house being renovated. Pallor, normocytic, hypochromic anemia and increased 5-aminolevulinic acid (d-ALA). Lead concentration is 50. Decreased activity of which enzyme?
    - Ferrochelatase, Dx Lead poisoning. inhibiting both D-Ala dehydratase & Ferrochelatase.
     
  2. Noobs

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    30. 22yo F HIV positive after sexual contact. Combination therapy with lamivudine (3TC), ritonavir/lopinavir, and zidovudine (AZT) started. Three months later, HIV strain resistant to ritonavir/lopinavir. Resistance came from mutation in a gene critical for which viral processes?
    - Protein processing -wrong!
    - Packaging and Assembly (FA 2017, p199)
     
  3. kennie

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    9. 2-month old M infant with 2-day hx of generalized tonic-clonic seizures, myoclonus and hiccuping. Fed poorly and floppy. Physical shows decreased deep tendon reflexes and hypotonia. A signally defect in an inhibitory neurotransmitter suspected. Which neurotransmitter?
    - Acetylcholine receptor

    The answer is actually glycine receptor. I'm looking at the right answer on my nbme form now.
     
  4. ChinaPaw

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    Hi, Mark:
    The related possible questions in the answer section are really good, but there are no answers provided, and some of those related questions are equally hard and tricky. Since there is a high chance that the interviewer is going to task those related questions, will you provide answers to them?
     
  5. ChinaPaw

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    Hi, Mark:
    The related possible questions in the answer section are really good, but there are no answers provided, and some of those related questions are equally hard and tricky. Since there is a high chance that the interviewer is going to task those related questions, will you provide answers to them?
     
  6. ChinaPaw

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    Hi, Mark:
    The related possible questions in the answer section are really good, but there are no answers provided, and some of those related questions are equally hard and tricky. Since there is a high chance that the interviewer is going to task those related questions, will you provide answers to them?
     
  7. ChinaPaw

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    Hi, Mark:
    The related possible questions in the answer section are really good, but there are no answers provided, and some of those related questions are equally hard and tricky. Since there is a high chance that the interviewer is going to task those related questions, will you provide answers to them?
     
  8. ChinaPaw

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    Hi, Mark:
    The related possible questions in the answer section are really good, but there are no answers provided, and some of those related questions are equally hard and tricky. Since there is a high chance that the interviewer is going to task those related questions, will you provide answers to them?
     
  9. ChinaPaw

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    Hi, Mark:
    The related possible questions in the answer section are really good, but there are no answers provided, and some of those related questions are equally hard and tricky. Since there is a high chance that the interviewer is going to task those related questions, will you provide answers to them?
     
  10. ChinaPaw

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    Hi, Mark:
    The related possible questions in the answer section are really good, but there are no answers provided, and some of those related questions are equally hard and tricky. Since there is a high chance that the interviewer is going to task those related questions, will you provide answers to them?
     
  11. ChinaPaw

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    Hi, Mark:
    The related possible questions in the answer section are really good, but there are no answers provided, and some of those related questions are equally hard and tricky. Since there is a high chance that the interviewer is going to task those related questions, will you provide answers to them?
     
  12. ChinaPaw

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    Hi, Mark:
    The related possible questions in the answer section are really good, but there are no answers provided, and some of those related questions are equally hard and tricky. Since there is a high chance that the interviewer is going to task those related questions, will you provide answers to them?
     

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