Answer the following statements true (T) or false (F)

1. IgA antibodies are involved in passive immunity.
2. RAG-1 is an enzyme involved in creating immunoglobulin light chains.
3. Hypermutation refers to the process by which immunoglobulin gene domains recombine to form a diverse array of antibodies.
4. The only cell type that can present antigens to helper T cells is the macrophage.
5. Cytotoxic T-cell activation requires the presentation of the same antigen by macrophages and (somatic) body cells.


1. TRUE
2. TRUE
3. FALSE
4. FALSE
5. TRUE

Biology & Microbiology

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