Unicellular organisms, such as bacteria, protozoa, unicellular algae, and unicellular fungi (yeasts), vastly outnumber multicellular organisms. These organisms lead their lives as single cells, performing all necessary functions for survival within that singular structure. The discussion also touches on Antonie van Leeuwenhoek, the first to describe various forms of bacteria, with a brief exploration of the pronunciation of his name and its meaning, which relates to "Lion's corner" in Dutch. The conversation highlights the significance of unicellular life forms in biological diversity and history.
