Final answer:
Class II Institutions must have a licensed pharmacist, a professional who dispenses drugs, advises on drug use, and ensures patient safety through their understanding of chemistry and biology.
Step-by-step explanation:
In the context of Class II Institutions, which could refer to a number of different regulated sectors such as healthcare facilities, a licensed pharmacist is typically required. Pharmacists must know a lot of chemistry and biology so they can understand the effects that drugs (which are chemicals, after all) have on the body. Pharmacists can advise physicians on the selection, dosage, interactions, and side effects of drugs. This is because pharmacists play a crucial role in these settings, as they dispense drugs prescribed by a doctor, advise physicians and patients on drug interactions and side effects, and ensure the proper use of medications. With their extensive knowledge of chemistry and biology, pharmacists can be found in various medical facilities, including hospitals, and are instrumental in patient health and safety.