[Campbell Biology P.169] A patient is diagnosed with a genetic disorder that leads to severe... | Practice Question

A patient is diagnosed with a genetic disorder that leads to severe blistering of the skin due to the widespread inability of epithelial cells to remain firmly attached to each other. Based on the functions described, which type of cell junction is most likely impaired in this patient?

  • A: Tight junctions
  • B: Desmosomes
  • C: Gap junctions
  • D: Plasmodesmata

Explanation

The text states that 'Desmosomes one type of anchoring junction function like rivets, fastening cells together into strong sheets.' The inability of epithelial cells to remain firmly attached, leading to blistering, directly corresponds to a failure in this anchoring and fastening function provided by desmosomes.