Chemical Agents and their mode of action

Question 1

Affect lipid rich plasma membranes. Causes cells so leak its contents.

Answer 1

Phenols

Question 2

Denatures proteins and dissolves lipids. Causes disruption of cellular membranes

Answer 2

Alcohols

Question 3

Mode of action not exactly known. Is surface active agent (decrease surface tension). Probably attacks plasma membrane.

Answer 3

Quaternary ammonium compounds

Question 4

Cross link functional groups of proteins (-SH, -OH, -NH2, -COOH).

Answer 4

Aldehydes

Question 5

Replaces protein function groups (-SH, -COOH, -OH) with alkyl groups (Alkylation).

Answer 5

Gaseous agents:

Ethylene oxide

Question 6

Mode of action not known. Thought to be interaction with amino acids and proteins

Answer 6

Halogens:

Iodine

Question 7

Mode of action not exactly known. Oxidizing agent. May damage cellular enzymes

Answer 7

Halogens:

Chlorine

Question 8

Oxidize cell components (Duh!)

Answer 8

Oxidizing agents:
Ozone
Hydrogen peroxide

Question 9

Combine with sulfhydryl groups (-SH) to denature proteins

Answer 9

Heavy metals:
Silver
Mercury
Copper

Question 10

Phenols

Answer 10

affect lipid rich plasma membranes

Question 11

alcohols

Answer 11

denatures proteins and dissolves lipids

Question 12

quaternary ammonium compounds

Answer 12

not exactly known

Question 13

aldehydes

Answer 13

cross link

Question 14

gaseous agents:

ethylene oxide

Answer 14

functional groups

Question 15

halogens:iodine

Answer 15

action not known

Question 16

halogens:chlorine

Answer 16

oxidizing agent

Question 17

oxidizing agents: ozone and hydrogen peroxide

Answer 17

oxidize

Question 18

heavy metals: silver, mercury, and copper

Answer 18

denature proteins