Lec 9

Question 1

• Are chemicals that kill wide range of microorganisms but not necessarily endospores
• Are used on inanimate objects.

Answer 1

Disinfectants

Question 2

destroy all microorganisms, including endospores.

Answer 2

Sterilants

Question 3

natural or synthetic chemical that kills or inhibits the growth of microorganisms.

Answer 3

antimicrobial agent

Question 4

Agents that actually kill organisms are called?

Answer 4

-cidal agents

Question 5

Agents that do not kill but only inhibit growth are called?

Answer 5

-static agents

Question 6

bacteriostatic, fungistatic, and viristatic
Example of?

Answer 6

Agents that do not kill but only inhibit growth

Question 7

bacteriocidal, fungicidal, and viricidal
Example of?

Answer 7

Agents that actually kill organisms

Question 8

Only Sterilants are effective against Endospores these structures are extremely resistant why?

Answer 8

because their spore coats prevent the penetration of most chemical agents.

Question 9

factors affect the efficacy of any chemical antimicrobial agent?

Answer 9

1- Organic matter
2- Biofilms
3- Endospores
4- Waxy nature of its cell wall

Question 10

are chemicals that kill or inhibit the growth of microorganisms but are sufficiently nontoxic to animals to be applied to living tissues.

Answer 10

Antiseptics / germicides

Question 11

can be both an antiseptic and a disinfectant, depending on the concentration and exposure time employed.

Answer 11

Ethanol

Question 12

Most used for hand washing or for treating surface wound
Which Chemical Antimicrobial Agents?

Answer 12

Antiseptics / germicides

Question 13

• used for dry hand washing when water is unavailable.
• used in the food industry to treat surfaces.
• reduce bacteria on surfaces
  Which Chemical Antimicrobial Agents
  ?

Answer 13

Sanitizers