Micro Quiz 2 Ch 5

Which of the following is least effective in achieveing a sterile envionment? A.) boiling B.) free-flowing steam C.) steam under pressure D.) dry heat

A.) boiling

Which of the following is an effective disinfectant and a cold chemical sterilant? A.) gluteraldehyde B.) formalin C.) Cepacol D.) tincture of Iodine

A.) gluteraldehyde

Zephiran A.) quaternary ammonium compound B. ) used as a gaseous disinfectant C. ) halogen D.) chlorinated lime E.) phenol

A.) quaternary ammonium compound

Ethylene oxide A.) quaternary ammonium compound B. ) used as a gaseous disinfectant C. ) halogen D.) chlorinated lime E.) phenol

B. ) used as a gaseous disinfectant

The ultraviolet rays contained in direct sunlight A.) are essential fro bacterial growth. B.) are bactericidal C.) are only bacteristatic D.) have no effect on bacteria

B.) are bactericidal

Freezing produces what type of effect on bacteria? A.) bactericidal B.) bacteriostatic C.) sporicidal D.) germicidal

B.) bacteriostatic

Which of the following refers to the minimum time it takes to kill all microorganisms present by heat? A.) thermal death point B.) thermal death time C.) decimal reduction time D.) maximum temperature

B.) thermal death time

Iodine A.) quaternary ammonium compound B. ) used as a gaseous disinfectant C. ) halogen D.) chlorinated lime E.) phenol

C. ) halogen

Antiseptics are used to kill bacteria on which of the following? I. surgical instruments II. floors III. skin IV. thermometers A.) I, II, III, IV B.) I, II, IV C.) III only D.) I and IV

C.) III only

The autoclave usually generates a temperature of about: A.) 100 degrees C B.) 121 degrees F C.) 200 degrees C D.) 121 degrees C

D.) 121 degrees C

Calcium hypochlorite A.) quaternary ammonium compound B. ) used as a gaseous disinfectant C. ) halogen D.) chlorinated lime E.) phenol

D.) chlorinated lime

Sterilization does which of the following? A.) kills bacteria but not viruses B.) inhibits the growth of all microorganisms C.) kills all microorganisms but not endospores D.) destroys all microorganisms and endospores

D.) destroys all microorganisms and endospores

Which of the following is a compound of iodine and a surfactant such as a detergent that can slowly release the free iodine? A.) Cepacol B. ) formalin C.) tincture of iodine D.) iodophor

D.) iodophor

Which of the following types of disinfectants includes benzalkonium chloride? A.) halogens B.) aldehydes C.) cresols D.) quaternary ammonium compounds

D.) quaternary ammonium compounds

Carbolic acid A.) quaternary ammonium compound B. ) used as a gaseous disinfectant C. ) halogen D.) chlorinated lime E.) phenol

E.) phenol