Q1. Which type of vaccine contains inactivated or killed pathogens?A. Live attenuated vaccineB. Toxoid vaccineC. Killed vaccineD. Recombinant vaccine
Q2. Which immune cells play a major role in graft rejection?A. B-cellsB. T-cytotoxic cellsC. NeutrophilsD. Basophils
Q3. Which of the following statements about T-helper cells is incorrect?A. T-helper cells assist in activating B-lymphocytes.B. T-helper cells secrete cytokines to regulate immune responses.C. T-helper cells directly kill infected cells.D. T-helper cells play a role in adaptive immunity.
Q4. Which immune component provides the first line of defense against infections?A. AntibodiesB. MacrophagesC. Skin and mucous membranesD. Cytotoxic T-cells
Q5. Which of the following statements about histamine is incorrect?A. Histamine is released by mast cells.B. Histamine causes inflammation and allergic responses.C. Histamine reduces inflammation.D. Histamine causes vasodilation.
Q6. Which class of drugs is used as a depressant and acts on the central nervous system?A. OpioidsB. CocaineC. AmphetaminesD. Cannabinoids
Q7. Which of the following statements about interferons is correct?A. Interferons help in defending against viral infections.B. Interferons directly kill bacteria.C. Interferons are a type of immunoglobulin.D. Interferons are produced only in bacterial infections.
Q8. What is the causative agent of the common cold?A. Influenza virusB. RhinovirusC. CoronavirusD. Streptococcus pneumoniae
Q9. Which type of cells produce antibodies?A. T-lymphocytesB. B-lymphocytesC. MacrophagesD. Neutrophils
Q10. Which of the following statements about antibiotics is incorrect?A. Antibiotics are effective against bacterial infections.B. Antibiotics can kill viruses.C. Overuse of antibiotics can lead to resistance.D. Antibiotics work by inhibiting bacterial growth or killing bacteria.