👉 Bacteroidal is a term used in science and medicine to describe organisms that have a single cell, called a bacterium. Bacteria are one of the most important groups of microorganisms, and they play an essential role in human health by contributing to our body's natural defenses against infections. In the context of bacteria, they can be classified into different types based on their size, shape, and function. Some examples include gram-negative (also called bacilli) bacteria, which are often found in