I. True/False (determine whether the given stotement is True or False) (1 pt each) 1. The mutation rate in Lymphocytes is the same as other somatic cells. T or F 2. A Plasma cell can only produce a single type of antibody isotype. T or F 3. Follicular Dendritic cells present antigens to B-cells using MHC display. T or F 4. Hypermutation and class switching occurs primarily in the Germinal center “dark zones. T or S. The protein pigR is a transport receptor for lgG1 and lgG2. T or F 6. Many B-cells with mutated BCRs end up eliminated by Apoptosis. T or F 7. A 2nd infection by the same pathogen is confronted by Memory B-cells producing high affinity Abs. T or 8. High avidity” results when antibodies form multimers having multiple binding sites. T or F 9. A single Plasma cell can produce lgG and igM with different variable domains. T or F 10. At the RSS splice junction P-nucleotides are added by TdT. T or F