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Question

Which of the following regarding antimicrobial control agents is FALSE?

A. Some agents kill by denaturing microbial cell proteins.

B. A true antimicrobial control agent equally effective against both bacteria and viruses.

C. Some agents are utilized as both an antiseptic and a disinfectant

D. Contaminating organic debris such as blood or sputum will decrease effectiveness.

E. Some agents affect microbial cell membranes by dissolving lipids.

Answer “Which of the following regarding antimicrobial control agents is FALSE?”.

Antimicrobial:

Antimicrobials are substances that hinder the cellular processes, which can lead to death of the microbe.

Antimicrobials that fight bacteria are antibiotics and those against fungi are antifungals.

Antimicrobial Agents:

Natural or synthetic substances used for hindering the growth or destruction of microorganisms are referred to as antimicrobial agents. They can be used as drugs against a variety of viruses, bacteria or fungal species.

Certain chemical compounds that inhibit the growth of microbes are referred to as anti-microbial agents. They typically target proteins, enzymes, or structural components such as cell walls or cell membranes and so on. that block growth initially followed by killing micro-organisms.

Bacteriostatic Versus Bacteriocidal Agents:

Chemical compounds which stop the development of bacteria. Bacteriocidal agents are chemicals which kill bacteria directly.

Answer

Relevant knowledge

Question

Which of the following regarding antimicrobial control agents is false?

A. Contamination of organic debris such as blood decrease the effectiveness of the antimicrobial agent.

B. Some agents kill by denaturing microbial cell proteins.

C. Alcohols are most effective at a 50-70% aqueous solution.

D. Biofilms increase the effectiveness of antimicrobial agents.

E. Some agents inactivate microbes by attacking cell membrane lipids.

Answer

The correct answer is option D. Biofilms increase the effectiveness of antimicrobial agents.

Explaination: Biofilms are thin, slimy layers of microorganisms that form by adhesion to wet surfaces. When a biofilm is formed the microorganisms are able to increase their resistance to antimicrobial control agents as well as host defenses and antibiotics.

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