Section-1 Q.1 MCQ: (Compulsory) (6×1-6) 1.Who introduced the technique of vaccination? a: Robert Koch b.Edward a Jenner c. Joseph Lister d. Paul Ehrlich. 2.Mesophilic bacteria best grow at. a.Below 20°C b. 25-40° C c. 45-70° C d. More than 70° C 3.Filtration is used for: a. Heat labile substances. b.Heat stable substances c. Milk d. Sulphuric acid. 4.Which of the following drugs inhibits protein synthesis ? a. Penicillin b. Cephalosporins.