A stain uses only one dye to enable the viewer to observe the size, shape, or arrangement of cells A stain uses only one dye to enable the viewer to observe the size, shape, or arrangement of cells Gram stain Simple stain Endospore stain Capsule stain

Simple.

Explanation:

A cell can be defined as the fundamental or basic functional, structural and smallest unit of life for all living organisms. Some living organisms are unicellular while others are multicellular in nature.

A unicellular organism refers to a living organism that possess a single-cell while a multicellular organism has many (multiple) cells.

Cell staining can be defined as a method used by scientists to view the cells of living organisms and its cellular components with the aid of microscope.

A simple stain uses only one dye to enable the viewer to observe the size, shape, or arrangement of cells. It typically involves the process of soaking a smear (thin film of living microorganisms) in dye and then rinsing it afterwards in order to visualize size, shape or arrangement of cells and other cell organelles such as mitochondria, cytoplasm, nucleus, golgi apparatus etc.