Blepharisma is a single-celled organism. It is a type of ciliate, a group of protozoa that are characterized by having hair-like structures called cilia that help them move.

While Blepharisma are single-celled, they are complex organisms with specialized structures within their single cell, such as:

* Nucleus: Contains the genetic material of the cell.

* Cilia: Short, hair-like structures that help the organism move.

* Contractile vacuoles: Help regulate water balance within the cell.

* Food vacuoles: Store food particles before they are digested.

So, while Blepharisma is a single cell, it is far from simple!