Microbes in Infectious Diseases — DU B. Sc. (Hons) Microbiology Previous Year Question Papers

Q4. Match the following with the most suitable option: (1x12=12) a. Anthrax i. Paralysis b. Tetanus ii. Skin maceration c. Polio ill. Weight loss d. Malaria iv. Pandemic e. AIDS v. Neurotoxin f. Dengue vi. Nosocomial infection g. Athlete's foot vii. Water borne disease h. Candida vili. Eschar i. Covid 19 ix. Virulence factor j. Hapten x. Hemorrhage k. Adhesin xi. High fever 1. Amoebiasis xii. Carrier protein Q5. State True or False citing suitable reasons for the following statements (any six): (2x6=12) a. Pulmonary tuberculosis may be transmitted by aerosols. b. Macrophages play an important role in innate immunity. c. Endotoxins are not pyrogenic. d. Secondary immune response is a heightened response occurring on re-exposure to antigen. e. IgA is not secreted in the body fluids such as tears. f. Soil can act as a reservoir for infectious agents. g. All antigens are immunogens Q6. a. Define the following terms citing suitable examples wherever possible (any four): (2x4=8) i. Exotoxin ii. Phagocytosis ill. Subunit Vaccine iv. Spleen v. Colonization b. Describe various characteristics of an antigen that determines its immune response. (4)