An organism that causes disease is a(n)
A) pathogen.
B) toxin.
C) antigen.
D) antibody.

Question

Quizplus · Accepted Answer

A pathogen is an organism that is capable of causing disease in a host. Toxins are substances produced by pathogenic organisms that can cause harm to the host. Antigens are molecules that can elicit an immune response in the host, while antibodies are proteins produced by the immune system in response to antigens. Only pathogen fits the definition of an organism that causes disease.

An Organism That Causes Disease Is A(n)