Q1. Which of the following pathogens causes typhoid fever in humans?A. Streptococcus pneumoniaeB. Salmonella typhiC. Haemophilus influenzaeD. Plasmodium vivax
Q2. Which of the following statements about malaria is incorrect?A. Malaria is caused by Plasmodium species.B. Malaria is transmitted by Anopheles mosquitoes.C. Malaria can be prevented by eliminating mosquito breeding sites.D. Malaria is a bacterial infection.
Q3. Which of the following statements about antibodies is incorrect?A. Antibodies are produced by B-lymphocytes.B. Antibodies help neutralize pathogens.C. Antibodies can directly destroy bacteria.D. Antibodies recognize and bind to specific antigens.
Q4. Which of the following statements about vaccines is correct?A. Vaccines provide passive immunity.B. Live-attenuated vaccines contain dead pathogens.C. Vaccines stimulate the immune system to produce memory cells.D. Toxoid vaccines contain live pathogens.
Q5. Which of the following statements about cancer is TRUE?A. Benign tumors spread to distant organsB. Malignant tumors undergo metastasisC. Cancerous cells have controlled growthD. Cancer is always hereditary
Q6. Which of the following statements about histamine is incorrect?A. Histamine is released by mast cells.B. Histamine is involved in allergic reactions.C. Histamine inhibits inflammation.D. Histamine causes vasodilation.
Q8. Which of the following statements about lymph is incorrect?A. Lymph carries white blood cells.B. Lymph plays a role in immune defense.C. Lymph contains red blood cells.D. Lymphatic vessels transport lymph throughout the body.
Q10. Which disease is characterized by severe muscle spasms and lockjaw?A. TuberculosisB. TetanusC. PneumoniaD. Typhoid