Q1. Which pathogen is responsible for causing diphtheria?A. Corynebacterium diphtheriaeB. Mycobacterium tuberculosisC. Salmonella typhiD. Haemophilus influenzae
Q2. Which of the following immune components is involved in cell-mediated immunity?A. B-cellsB. T-cytotoxic cellsC. Plasma cellsD. Erythrocytes
Q3. Which immunoglobulin is present in the highest concentration in blood plasma?A. IgAB. IgGC. IgMD. IgE
Q4. Which of the following cells are responsible for allergic reactions?A. NeutrophilsB. Mast cellsC. MacrophagesD. Erythrocytes
Q5. Which of the following statements about lymphatic circulation is incorrect?A. Lymphatic vessels transport lymph.B. Lymphatic vessels help in fat absorption.C. Lymphatic circulation includes a pump similar to the heart.D. Lymph nodes filter pathogens from lymph.
Q7. Which of the following is a feature of active immunity?A. It is short-livedB. It involves memory cell formationC. It is acquired from another individualD. It does not involve antigen exposure
Q8. Which of the following is a characteristic feature of autoimmune diseases?A. Overactive immune response against self-cellsB. Failure of antigen recognitionC. Complete absence of immune cellsD. Uncontrolled production of antibodies against all antigens
Q9. Which of the following statements about phagocytosis is correct?A. Phagocytosis is the process of immune cells engulfing pathogens.B. Only B-cells perform phagocytosis.C. Phagocytosis occurs exclusively in the liver.D. Phagocytosis is not involved in immune defense.
Q10. Which of the following cells are involved in the production of antibodies?A. T-cytotoxic cellsB. MacrophagesC. Plasma cellsD. Basophils