A protein molecule produced in a host in response to an antigen and is capable of binding specifically to that antigen is called:
A) perforin
B) antigen
C) antibody
D) cytokine

Question

Quizplus · Accepted Answer

The definition provided in the question describes an antibody. Antibodies are produced by the immune system in response to antigens and have a specific binding site for that antigen. Perforin is a protein involved in cell death, antigen is a foreign substance that triggers an immune response, and cytokines are proteins involved in cell signaling and communication.

A Protein Molecule Produced in a Host in Response to an Antigen