A marker on the surface of a foreign substance that triggers the immune response is called a(n)
A) antigen.
B) enzyme.
C) antibody.
D) lymphocyte.

Question

Quizplus · Accepted Answer

An antigen is a marker on the surface of a foreign substance that triggers the immune response. Enzymes are proteins that catalyze chemical reactions, antibodies are proteins produced by the immune system to specifically recognize and neutralize antigens, and lymphocytes are white blood cells involved in the immune response.

A Marker on the Surface of a Foreign Substance That