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Kaplan Qbank USMLE



Author5 Posts
  #1

70 y.o man with prostate cancer, receiving external beam of radiation for spinal metastasis, presents with pain on right chest, examination shows multiple vesicular lesions along the right side of the chest in a 4-6 cm stripe frm the midline to flank.

How do member of the virus family responsible for his condition produce mRNA ?

A. Direct translation from the genome
B. Producing double stranded DNA intermediate
C. Produce negative sense intermediate
D. Produce positive sense intermediate
E. Transcribe the genomic DNA
F. Transcribe from proviral DNA
G. Genomic RNA is used directly by the ribosome

  #2

E. Transcribe the genomic DNA

  #3

Exactly

  #4

Sorry, can you give an explanation for this answer?

  #5

A Direct translation from genome :arrow: Positive ss RNA serve as mRNA

B. Produce ds DNA intermediate :arrow: Retrovirus as HIV

C. Produce negative sense intermediate :arrow: From positive ss RNA

D. Produce positive sense intermediate :arrow: From negative ss RNA

E. Transcribe genomic DNA :arrow: Ds DNA virus, this agent is VZV belong to Herpes virus, DNA family virus

F. Transcribe from pro-viral DNA :arrow: maybe Retrovirus ( i am not certain :? )

G. Genomic RNA direct used by ribosome :arrow: IPositive ss RNA virus as in A







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