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Questions and Answers
What is responsible for the increased strength of allergic reactions upon subsequent exposures to an allergen?
What is responsible for the increased strength of allergic reactions upon subsequent exposures to an allergen?
- Cellular evolution (correct)
- Immune system fatigue
- Increased allergen concentration
- Environmental pollution
What is a mechanism of evolution that accounts for adaptation?
What is a mechanism of evolution that accounts for adaptation?
- Genetic drift
- Mutation
- Gene flow
- Natural selection (correct)
What happens to B cells upon subsequent exposures to an allergen?
What happens to B cells upon subsequent exposures to an allergen?
- Become less effective
- Produce better and more antibodies (correct)
- Stop functioning
- Remain unchanged
What is the primary reason for the increasing number of people with allergies in America and other countries?
What is the primary reason for the increasing number of people with allergies in America and other countries?
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What occurs within the immune system over time to produce a more robust antibody response?
What occurs within the immune system over time to produce a more robust antibody response?
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