Influenza is caused by a virus. This virus is an example of a broad category of disease-causing organisms called __________.
A)pathogens
B)antibodies
C)antigens
D)leukocytes

Question

Quizplus · Accepted Answer

Pathogens are organisms that cause disease, including viruses, bacteria, fungi, and parasites. Influenza is caused by a virus, which is a type of pathogen. Antibodies are proteins produced by the immune system in response to pathogens. Antigens are molecules that can trigger an immune response, including those found on the surface of pathogens. Leukocytes are white blood cells that are involved in the immune response to pathogens. While all of these terms are related to the immune system and disease, only pathogens accurately describe the category of organism that causes influenza.

Influenza Is Caused by a Virus