Multiple Choice
Why would a person who has their tonsils removed be more susceptible to certain types of infections of the throat and respiratory tract?
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21. The Immune System
Review of Adaptive Immunity
Multiple Choice
Which of the following is not typical of an immunogenic antigen?
A
Viral protein.
B
Foreign nucleic acid.
C
Molecules not made by the host organism.
D
Cytoplasmic proteins commonly found in host skin cells.
Verified step by step guidance1
Understand the concept of an immunogenic antigen: An immunogenic antigen is a substance that can provoke an immune response in the body. Typically, these are foreign substances that the immune system recognizes as non-self.
Identify the characteristics of typical immunogenic antigens: They are usually foreign to the host, such as viral proteins or foreign nucleic acids, and are not naturally produced by the host organism.
Analyze the options provided: Viral proteins and foreign nucleic acids are examples of substances that are not naturally produced by the host and can trigger an immune response.
Consider the nature of cytoplasmic proteins: These are proteins found within the cells of the host organism, such as skin cells, and are typically recognized as self by the immune system.
Conclude which option is not typical of an immunogenic antigen: Since cytoplasmic proteins are commonly found in host skin cells and are recognized as self, they do not typically provoke an immune response, making them not typical of an immunogenic antigen.
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