[Campbell Biology P.1002] Based on the provided text, which of the following statements best ... | Practice Question

Based on the provided text, which of the following statements best describes the characteristics of innate immunity?

  • A: It involves specific recognition of a broad class of pathogens and rapid, general responses.
  • B: It is a set of molecular and cellular defenses found only among vertebrates.
  • C: It primarily relies on the production of antibodies to target specific pathogens.
  • D: It develops memory after exposure to a pathogen, leading to a faster secondary response.

Explanation

Innate immunity involves recognition proteins that bind to molecules common to broad classes of pathogens molecular recognition . It provides rapid, general responses as the first line of defense, distinguishing nonself from self. The other options describe characteristics of adaptive immunity, which is presented as distinct from innate immunity in the text.