Antibodies against a specific antigen can be injected into a person to provide passive immunity. For which reason is this NOT as effective as the process of vaccination with that antigen?
A) Injection of antibodies does not provide long-lasting immunity.
B) Vaccination with antigens triggers a clonal selection of B cells and cytotoxic T cells.
C) Injection of antibodies may cause allergic reactions, while vaccination never causes allergic reactions.
D) Injection of antibodies does not provide long-lasting immunity, and vaccination with antigens triggers a clonal selection of B cells and cytotoxic T cells.
E) Injection of antibodies does not provide long-lasting immunity and may cause allergic reactions, while vaccination never causes allergic reactions.

Question

Quizplus · Accepted Answer

Injecting antibodies provides temporary immunity because the antibodies are not produced by the individual's own immune system and will eventually be broken down and eliminated by the body. Vaccination with antigens triggers a clonal selection of B cells and cytotoxic T cells, leading to the production of memory cells that can provide long-lasting immunity. Option C is incorrect because vaccination can also potentially cause allergic reactions, although it is rare. Option E is incorrect because it combines two separate reasons and is therefore not the best choice.

Antibodies Against a Specific Antigen Can Be Injected into a Person