| 1. | B cells confer active immunity; cytotoxic T cells confer passive immunity |
| 2. | B cells kill viruses directly; cytotoxic T cells kill virus infected cells. |
| 3. | B cells secrete antibodies against a virus; cytotoxic T cells kill virus-infected cells |
| 4. | B cell accomplish humoral immunity. |
| 1. | Variable Region – determines antibody specificity for an epitope |
| 2. | Immunioglobulins – glycoproteins that form epitopes |
| 3. | Constant Region – determines class and function of antibody |
| 4. | IgG – most abundant circulating antibodies, confer passive immunity to fetus |
| 1. | Excessive cell proliferation |
| 2. | Transformation of benign tumors into malignant tumors |
| 3. | Movement of cancerous cell from one site to another site of the body |
| 4. | Transformation of a normal cell into a tumorous cell |
| List I | List II |
| A. Wuchererua bancrofti | I. Pneumonia |
| B. Trichophyton rubrum | II. Malaria |
| C. Plasmodium vivax | III. Filariasis |
| D. Haemophilus influenzae | IV. Ringworm |
| A. | Antibodies produced for allergens are of IgA type |
| B. | B-cells themselves do not secrete antibodies but help T-cells to produce them |
| C. | T-cells are responsible for the graft rejection |
| D. | Each antibody molecule has four peptide chains |
| List I | List II |
| A. Typhoid | I. Trichophyton |
| B. Filariasis | II. Salmonella |
| C. Ringworms | III. Entamoeba histolytica |
| D. Amoebiasis | IV. Wuchereria |