[Campbell Biology P.1002] Based on the section 'Innate Immunity of Invertebrates', which of t... | Practice Question

Based on the section 'Innate Immunity of Invertebrates', which of the following components are described as part of the innate immune defense system in insects? Select all that apply

  • A: Chitin exoskeleton
  • B: Lysozyme
  • C: Hemocytes
  • D: Antimicrobial peptides
  • E: Toll receptor
  • F: Antibodies

Explanation

The section 'Innate Immunity of Invertebrates' explicitly mentions the insect exoskeleton composed of chitin and chitin lining the intestine as barrier defenses. It also names lysozyme as a chemical barrier. For internal defenses, hemocytes which perform phagocytosis and release antimicrobial peptides and the Toll receptor involved in activating antimicrobial peptide production are all described as key components of insect innate immunity. Antibodies are associated with adaptive immunity, primarily found in vertebrates, and are not mentioned in this context for invertebrates.