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Kaplan Qbank USMLE



Author5 Posts
  #1

Patients with xeroderma pigmentosum develop skin CANCER when they are exosed to sunlight because they have a deficiency in

a: the primase enzyme of the replication complex
B: a recombinase that permits chromosomes to exchange segments
C: a glycocylate that removes damaged bases from DNA
D: an enzyme that acts early in the nucleotide excision repair pathway
E: an enzyme essential to repair mismatched bases 8)

  #2

D: an enzyme that acts early in the nucleotide excision repair pathway

  #3

ANS: D Problems with excision endonuclease. This belongs to G1 phase.

___________________
La vita e bella!

  #4

D...

  #5

:wink: you are right







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