Question

22. 24. 25. 27. Match LIST A with LIST B. (1 point each) When treatment is directed at living tissue 23. Gas used for sterilization Freeze-drying Common pasteurization protocol 26. the time in minutes) required to kill 90% of a bacterial population at a given temperature Lowest temperature at which all microbes in a liquid culture will be killed in 10 minutes Method of dry heat sterilization 29. Ionizing radiation The length of time required to kill all bacteria in a liquid culture at a given temperature LIST B ethylene oxide antisepsis incineration DRT HTST bc. X-rays microaerophile lyophilization TDT d. TDP UV radiation 28. 30. ae. a b. C. e. ab. ac. ad. bd.

Answer 1

22. When treatment is directed at living tissues - it is called as e. antisepsis.

23. Gas used for sterilisation - is a. ethylene oxide which generates free radicals inside cells and causes death of the cells.

24. Freeze-drying - ac. Lyophilisation

25. Common pasteurisation protocol - ab. HTST which stands for high temperature short time meaning that the solution is kept at high temperature for a short time so that the bacteria in it are killed.

26. the time in minutes required to kill 90% of bacterial population at a given temperature - b. DRT which stands for Decimal redution time.

27. Lowest temperature at which all microbes in a liquid culture will be killed in 10minutes - d. TDP which stands for thermal death point.

28. Method of dry heat sterilisation - ae. incineration

29. Ionizing radiation - bc. X rays

30. The length of time required to kill all bacteria in a liquid culture at a given temperature - bd. TDT which stands for thermal death time.

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