Multiple Choice
Each year it is recommended that healthy adults get a flu shot. Why do we need to get a vaccine for the flu every year instead of once in our lifetime?
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21. Principles of Disease
5) Avoiding Antibodies
Multiple Choice
All of the following are known mechanisms that pathogens use to avoid the effects of antibodies except which of these answers?
A
Pathogens mimicking host cells.
B
Fc receptors.
C
Synthesis of IgG protease.
D
Remaining intracellular.
E
Antigenic variation.
Verified step by step guidance1
Understand the role of antibodies in the immune system: Antibodies are proteins produced by the immune system to identify and neutralize foreign objects like bacteria and viruses.
Identify mechanisms pathogens use to evade antibodies: Pathogens have developed various strategies to avoid detection or neutralization by antibodies, such as antigenic variation, remaining intracellular, and mimicking host cells.
Examine each option: Analyze how each mechanism helps pathogens evade antibodies. For example, antigenic variation involves changing surface proteins to avoid recognition, while remaining intracellular allows pathogens to hide within host cells.
Consider the synthesis of IgG protease: IgG protease is an enzyme that breaks down IgG antibodies. Determine if this mechanism is commonly used by pathogens to evade antibodies.
Compare the mechanisms: Evaluate which of the listed mechanisms is not typically associated with antibody evasion. This involves understanding the common strategies pathogens use and identifying any outliers.
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