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
You might also like to view...
What reduces the rate at which bacteria converts dissolved organic matter to particulate organic matter?
a. Phages b. Dissolved organic matter availability c. Sunlight d. Depth
Which of the following microorganisms would find hypotonic conditions most damaging?
A. Protozoa B. Cyanobacteria C. Algae D. Bacteria E. Fungi
Active chemicals found in chocolate, tea, coffee, and
soft drinks are examples of which of the following? a. depressants b. stimulants c. analgesics d. hallucinogens e. antipsychotics
Ghrelin is secreted when the stomach is full. Indicate whether the statement is true or false