[Campbell Biology P.1016] According to the provided text and figure, what is the primary dist... | Practice Question

According to the provided text and figure, what is the primary distinction in the pathogens targeted by the humoral immune response versus the cell-mediated immune response?

  • A: Humoral immunity targets intracellular pathogens, while cell-mediated immunity targets extracellular pathogens.
  • B: Humoral immunity targets extracellular pathogens in blood and lymph, while cell-mediated immunity targets intracellular pathogens and certain cancers.
  • C: Humoral immunity relies on direct cell-to-cell contact, while cell-mediated immunity relies on secreted antibodies.
  • D: Humoral immunity only targets viruses, while cell-mediated immunity only targets bacteria.

Explanation

The text explicitly states that the humoral immune response 'Defend against extracellular pathogens in blood and lymph' and the cell-mediated immune response 'Defend against intracellular pathogens and certain cancers'. Option B accurately reflects this distinction.