Which of the following is a large, complex molecule that triggers a specific immune response against itself when it gains entry into the body
A)interferon
B)opsonin
C)complement
D)antigen

Question

Quizplus · Accepted Answer

An antigen is a large, complex molecule (such as a protein or carbohydrate) that is able to trigger a specific immune response when it gains entry into the body. The immune system recognizes antigens as foreign and launches an attack against them, which can involve the production of antibodies and the activation of various immune cells. Examples of antigens include viruses, bacteria, pollen, and certain types of food.  Interferon, opsonin, and complement are all components of the immune system, but they do not fit the definition of an antigen.

Which of the Following Is a Large, Complex Molecule That