Multiple Choice
Which of the following is true of antigens?
237
views
21. The Immune System
Antigens
Struggling with Anatomy & Physiology?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
Which of the following correctly describes the relationship between a pathogen and an antigen?
A
Pathogens are molecules that bind to antigens to neutralize them.
B
Antigens are the cells that pathogens use to replicate within the host.
C
A pathogen is a type of antigen that directly attacks immune cells.
D
An antigen is a substance that can trigger an immune response, often found on the surface of a pathogen.
Verified step by step guidance1
Begin by understanding the definitions of 'pathogen' and 'antigen'. A pathogen is an organism, such as a virus, bacteria, or fungus, that can cause disease. An antigen is a molecule or molecular structure, often found on the surface of pathogens, that is recognized by the immune system.
Recognize that antigens are not cells, but rather substances that can trigger an immune response. They are typically proteins or polysaccharides on the surface of pathogens.
Understand that pathogens do not bind to antigens to neutralize them. Instead, the immune system produces antibodies that bind to antigens to neutralize or mark them for destruction.
Clarify that pathogens do not use antigens to replicate within the host. Pathogens may use host cells to replicate, but antigens are simply markers that the immune system recognizes.
Conclude that the correct relationship is that an antigen is a substance that can trigger an immune response, often found on the surface of a pathogen, helping the immune system identify and respond to the pathogen.
Related Videos
Related Practice
