Antimicrobial Agents Overview

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Questions and Answers

Which of the following is an example of an antimicrobial agent obtained from a fungus?

Penicillin (correct)
Gentamicin
Quinolones
Bacitracin

Antiseptics are used on living tissues to kill or inhibit microorganisms.

False (B)

Name one class of antimicrobial agents that is synthesized in pharmaceutical laboratories.

Quinolones

Antiviral agents are used to treat __________ infections.

<p>viral</p> Signup and view all the answers

Match the following sources of antimicrobial agents with their respective examples:

<p>From fungi = Penicillins From bacteria = Gentamicin Chemically synthesized = Quinolones Semisynthetically modified = Amoxicillin</p> Signup and view all the answers

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Study Notes

Antimicrobial Agents

Chemical substances that either kill or inhibit the growth of microorganisms.
Include subgroups: antibacterials (antibiotics), antifungals, antiparasitic, and antiviral agents.
Can be sourced from microorganisms, synthesized in laboratories, or produced using recombinant DNA technology.

Antimicrobial Agent Uses

Internal and external uses:
- Antibiotics, antifungals, antiparasitic, and antiviral agents.
External use only:
- Antiseptics and disinfectants, used to kill or inhibit microorganisms on nonliving objects.

Antimicrobial Agent Sources

Microorganisms:
- Fungi: Penicillins, cephalosporins.
- Bacteria: Bacitracin, polymyxins, and gentamicin.
Chemical synthesis:
- Quinolones.
Semisynthesis:
- Part of the molecule is produced by fermentation using microorganisms.
- Product is then further chemically modified.
- Example: Amoxicillin.