Applied Pharmaceutical Microbiology II: Chemical Antimicrobial Agents Quiz

Which of the following is NOT considered a physical antimicrobial agent?

Alcohol (correct)
Desiccation (Dehydration)
Heat
Radiation

What is the main mechanism of action for Quaternary Ammonium Compounds as antimicrobial agents?

Disruption of metabolic pathways
Inactivation of enzymes
Inhibition of DNA replication
Denaturation of proteins and disruption of cell membranes (correct)

Which factor affects the activity of chemical antimicrobial agents by influencing the concentration exponent?

Organic matter
pH
Inoculum size
Temperature (correct)

What property of heavy metals makes them effective as antimicrobial agents?

Broad-spectrum antimicrobial activity (D) Signup and view all the answers

Which evaluation method is commonly used to assess the effectiveness of disinfectants and antiseptics?

Kelsey-Sykes capacity test (B) Signup and view all the answers

What type of chemical agents are Phenols and Phenolics in the context of antimicrobial activity?

Alkylating agents (A) Signup and view all the answers

What is the main purpose of chemical antimicrobials as anti-germ?

To reduce the spread of germs through people's contact with surfaces like sinks and countertops (A) Signup and view all the answers

Which of the following is classified as a disinfectant?

Hydrogen peroxide (C) Signup and view all the answers

What is the process of disinfection?

The process whereby chemical methods are used to remove or destroy microorganisms on a surface to a non-harmful level (C) Signup and view all the answers

What are antiseptics?

Agents applied to living tissues to destroy or inhibit the growth of infectious microorganisms (A) Signup and view all the answers

What is the main purpose of preservatives?

To prevent the growth of microorganisms that may cause spoilage or disease (A) Signup and view all the answers

Which chemical is commonly used for disinfection?

Chlorine (D) Signup and view all the answers

Which type of chemical antimicrobial is used to destroy or inhibit the growth of infectious microorganisms on living tissues?

Antiseptics (B) Signup and view all the answers

What is the process whereby physical or chemical methods are used to remove/destroy microorganisms and reduce their number on a surface to a non-harmful level?

Disinfection (D) Signup and view all the answers

Which of the following is NOT a chemical disinfectant according to the text?

Ultraviolet radiation (D) Signup and view all the answers

What is the main purpose of using chemical antimicrobials as anti-waste?

To preserve against spoilage by mold and mildew (A) Signup and view all the answers

Which of the following is classified as a preservative in the context of antimicrobial activity?

Sodium benzoate (D) Signup and view all the answers

What is the classification of chemicals derived from one microorganism or living cell which can kill another microorganism, usually within the body?

Antibiotics (D) Signup and view all the answers

What is the purpose of using chemical antimicrobials as anti-germ?

To reduce the spread of germs on frequently touched surfaces (D) Signup and view all the answers

Which type of chemical antimicrobial is used in woods, paints, and textiles to prevent spoilage by mold and mildew?

Preservatives (A) Signup and view all the answers

Which category of chemical antimicrobials is used as medicines as first line of defense against infection?

Antibiotics (D) Signup and view all the answers

Which chemical agent is used to inactivate or destroy microorganisms living on non-living surfaces or on skin and mucous membrane?

Phenols and phenolic compounds (B) Signup and view all the answers