Wyoming Pesticide Applicator Certification Practice Test 2026 - Free Pesticide Applicator Certification Practice Questions and Study Guide

Antibiotics, such as penicillin, are chemicals that are produced by microorganisms, such as fungi, and are able to inhibit or kill other microorganisms. This is why they are often used as medicine to fight bacterial infections. Agitation system (A) is a mechanical process used in industry to mix fluids, and is not produced by microorganisms. Algaecide (Algicide) (B) is a chemical used to kill algae in bodies of water, but it is not produced by microorganisms. Algae (D) are a diverse group of photosynthetic microorganisms, but they are not always toxic to other microorganisms. So, the most accurate answer is C Antibiotic.