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Free USMLE Mock Exam – Practice Online Confidently

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Exam Code: USMLE
Exam Questions: 630
United States Medical Licensing Examination
Updated: 26 Nov, 2025
Question 1

The Tzanck test is not used on which of the following viruses? 

Options :
Answer: C

Question 2

Which of the following best describes a person that is unable to tell you were there hand or foot is? 

Options :
Answer: A

Question 3

Vitamin D is created from _________ by skin cells. 

Options :
Answer: A

Question 4

A 9-month-old male is evaluated for lactic acidosis and increased levels of serum alanine. He is diagnosed with pyruvate dehydrogenase complex deficiency and placed on a special diet by the physician. This special diet most likely consists of

Options :
Answer: D

Question 5

Which of the following syndromes corresponds to: chromosomal deficit of #5? 

Options :
Answer: D

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