Final answer:
The antimicrobials produced by molds and bacteria that inhibit other microbes are called antibiotics, such as the well-known penicillin.
Step-by-step explanation:
The antimicrobials produced by some molds and bacteria that kill or inhibit other microorganisms are generally called antibiotics. For example, penicillin was the first antibiotic discovered and is produced by the mold Penicillium notatum. Antibiotics are a critical tool in treating and controlling infectious diseases, and can be produced naturally by microorganisms such as fungi, or be mass-produced in the laboratory. They can also be modified to enhance their effectiveness against harmful microorganisms, whether found in nature or as part of pharmaceutical development.