https://www.khanacademy.org/science/ms-biology/x0c5bb03129646fd6:cells-and-organisms/x0c5bb03129646fd6:cells-organisms/v/ms-cells-and-organisms 2022-09-10T03:04:58.582913383Z Cells and organisms All living things are made up of cells, which is the smallest unit that can be said to be alive. An organism may consist of one single cell (unicellular) or many different numbers and types of cells (multicellular). Khan Academy video https://cdn.kastatic.org/ka_thumbnails_cache/4c87c6c9-4669-4319-91b7-935603e64401_1280_720_base.png Cells and organisms All living things are made up of cells, which is the smallest unit that can be said to be alive. An organism may consist of one single cell (unicellular) or many different numbers and types of cells (multicellular). https://cdn.kastatic.org/ka-youtube-converted/Uiqro5TUyLA.mp4/Uiqro5TUyLA.mp4 237 Cells as building blocks of life https://www.khanacademy.org/science/hs-bio/x230b3ff252126bb6:from-cells-to-organisms/x230b3ff252126bb6:the-cellular-basis-of-life/a/the-cellular-basis-of-life 2024-06-28T21:00:15.59562973Z The cellular basis of life Learn about what it means to be alive, and how cells are the foundational units of life. article https://www.khanacademy.org/science/ms-biology/x0c5bb03129646fd6:cells-and-organisms/x0c5bb03129646fd6:cells-organisms/a/cells-and-organisms 2026-04-15T10:00:48.515869037Z Key points: Cells and organisms Review your understanding of cells and organisms in this free article. article https://www.khanacademy.org/science/biology/structure-of-a-cell/introduction-to-cells/a/intro-to-cells 2021-04-29T07:48:39Z Intro to cells An introduction to cells, including the history of their discovery and the development of cell theory. article https://www.khanacademy.org/science/ms-biology/x0c5bb03129646fd6:cells-and-organisms/x0c5bb03129646fd6:cells-organisms/e/understand-cells-and-organisms 2026-04-15T10:00:48.515869037Z Understand: Cells and organisms Check your understanding of cells and organisms in this set of free practice questions. Khan Academy exercise