Bacteriology is the study of what?

• A. Bacteria
• B. Viruses
• C. Fungi
• D. Protozoa

Answer: (A)

Bacteriology is the study of bacteria. Bacteria are microscopic, single‑celled organisms that are prokaryotes, meaning they lack a true nucleus and membrane‑bound organelles. Bacteriology explores how these organisms live, reproduce, and interact with humans, including how they can cause infections and how to prevent or control them through proper sanitation, disinfection, and sterilization—critical in any cosmetic or beauty setting to keep clients and staff safe. Other microorganisms—viruses, fungi, and protozoa—are studied in their respective fields (virology, mycology, and protozoology) and have different structures and life cycles, which is why the study focusing specifically on bacteria is called bacteriology.