C H A P T E R 13 Sterilization & Disinfection 1. Regarding sterilization and disinfection, which one of the following is the most accurate statement? (A) Seventy percent alcohol is a better antiseptic than iodine, so 70% alcohol should be used to disinfect the skin prior to drawing a blood culture rather than iodine

1. Regarding sterilization and disinfection, which one of the

following is the most accurate statement?

(A) Seventy percent alcohol is a better antiseptic than iodine,

so 70% alcohol should be used to disinfect the skin prior

to drawing a blood culture rather than iodine.

(B) Disinfectants kill both bacterial cells and bacterial spores.

(C) During sterilization by autoclaving, the temperature must

be raised above boiling in order to kill bacterial spores.

(D) Transmission of milk-borne diseases can be prevented by

pasteurization, which kills both bacterial cells and spores.

(E) Ultraviolet light used in the operating room to disinfect

the room kills bacteria primarily by causing oxidation of

lipids in the cell membrane.

1. Which one of the following chemicals is used to sterilize

heat-sensitive materials, such as surgical instruments, in the

hospital?

(A) Benzalkonium chloride

(B) Cresol (Lysol)

(C) Ethylene oxide

(D) Thimerosal

(E) Tincture of iodine