Innate immunity ________.
A) is the first, and most general, mechanism of protection against pathogens
B) depends on an infected animal's previous exposure to a pathogen
C) is based on recognition of antigens that are specific to a pathogen
D) is found only in vertebrates

Question

Quizplus · Accepted Answer

Innate immunity is the first line of defense against pathogens and is the most general mechanism of protection. It is present in all animals, including invertebrates and vertebrates, and does not require previous exposure to the pathogen or recognition of specific antigens.

Innate Immunity ________