Short answer
A cell is an individual basic living unit. A tissue is an organized group of cells carrying out a related function. A muscle cell is one unit; muscle tissue comprises many cells and supporting material arranged to do work together. 1 2
Cells are the units that organize into tissues; tissues can in turn make up organs.
On this page
At a glance
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| Question | Cell | Tissue |
|---|---|---|
| Level | Individual living unit | Organized group of cells |
| Example | One muscle cell | Muscle tissue |
| Next level in body | Contributes to tissues | Contributes to organs |
The table summarizes the cited definitions and the article’s stated scope. 1 2
What each thing is
Cell. A basic living unit with a boundary and internal components. 1
Tissue. A group of cells organized to perform a related function in a multicellular organism. 2
Key differences
One tissue can contain more than one cell type, even when one type gives it its name. Cells have internal organization and carry out life processes; a tissue describes the coordinated arrangement and function of many cells. The difference is organizational scale rather than whether the material is alive. 1 2
How to tell them apart
If you can point to one bounded living unit under a microscope, cell is the right level. If you are describing an organized layer or mass of cooperating cells that performs a shared function, tissue is the right level. Specify the organism and structure when the everyday word “tissue” is ambiguous. 1 2
Where they overlap
Both are biological structures studied in anatomy and pathology. A tissue contains cells, and individual cells depend on tissue context in a multicellular body. 1 2
Edge cases
Blood is conventionally classified as a connective tissue although its cells are suspended in fluid; tissue need not look like a solid sheet. A single-celled organism has cells but lacks the multicellular tissue level described here. 1 2
Why the distinction exists
Biology uses levels of organization to connect what individual cells do with how organs and whole organisms work. The separate terms mark a real change from unit to coordinated structure. 1 2
Common misconceptions
A tissue is not simply a giant cell. Nor must every tissue consist only of one identical cell type. 1 2
Examples
An epithelial cell can be one part of an epithelial tissue lining a surface. That tissue, together with others, contributes to an organ. 1 2
Sources
Sources checked October 3, 2026.
- OpenStax Biology 2e — Eukaryotic Cells. 4.3 Eukaryotic Cells.
- OpenStax Biology 2e — Themes and Concepts of Biology. Levels of Organization.