Active immunity is a response to exposure to what substance?
1. Allergens
2. Immunoglobulins
3. A true pathogen
4. Antigens
Correct Answer: 3
Rationale 1: Allergens result in an allergic response, not immunity.
Rationale 2: Immunoglobulins are administered to assist the immune response.
Rationale 3: Active immunity is a response to a true pathogen.
Rationale 4: Antibodies develop in response to antigens.
Global Rationale: The type of response induced by the real pathogen, or its vaccine, is called active immunity.
Allergens result in an allergic response, not immunity. Immunoglobulins are administered to assist the immune response. Antibodies develop in response to antigens.
Cognitive Level: Understanding
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