Definition
Tetrahymena are single-celled eukaryotic organisms, often found in freshwater habitats. They're a type of ciliate, meaning they have cilia—tiny, hair-like structures—that help them move and feed. Think of them as tiny, hairy swimmers! 🏊♀️ These organisms are famous in the science world because of their unique nuclear structure. They have two types of nuclei: a small, diploid germline nucleus and a large, polyploid somatic nucleus. It's like having a backup hard drive for genetic information! 💾