Question:

Answer: e. None of the answers is correct; all of these factors may contribute to hospital-acquired infection.

Question: Autoclaving is the most effective method of moist heat sterilization.

Select one:

True

False

Answer: True

Question: Any process that destroys the non-spore forming contaminants on inanimate objects is sterilization.

Select one:

True

False

Answer: False

Question:

Answer: c. Some agents inactivate viruses by attacking cell membrane lipids.

Question: Oxidizing agents include all of the following EXCEPT

Select one:

1. glutaraldehyde.

2. b. iodine.

3. c. ozone.

4. d. hydrogen peroxide.

5. e. chlorine

6. Answer: a. glutaraldehyde.

7. Question: Some antimicrobial chemicals are considered to be disinfectants and antiseptics.

8. Select one:

9. True

10. False

11. Answer: True

12. Question: All of the following are methods of food preservation EXCEPT

13. Select one:

14. a. high pressure.

15. b. ionizing radiation.

16. c. osmotic pressure.

17. d. microwaves.

18. e. desiccation.

19. Answer: d. microwaves.

20. Question:

21. Answer: b. A true antimicrobial control agent is equally effective against both bacteria and viruses.

22. Question: you were preparing nutrient agar at home and did not have an autoclave, what could you use to sterilize the nutrient agar?

23. Select one:

24. a. oven at 121°C for one hour

25. b. boiling for one hour

26. c. bleach

27. d. hydrogen peroxide

28. e. pressure cooker at 121°C for 15 minutes

29. Answer: e. pressure cooker at 121°C for 15 minutes

30. Question: All of the following substances are used to preserve foods EXCEPT

31. Select one:

32. a. nisin.

33. b. sodium nitrite.

34. c. calcium propionate.

35. d. biguanides.

36. e. potassium sorbate.

37. Answer: d. biguanides.