An illustration of many different cells, with a few rulers to measure them

Cells are the smallest unit of life. Our bodies are made of hundreds of types of cells, and trillions of different cells. In school, we learn a lot about how cells make energy, defend our bodies, and make our bodies grow. But there's at least one major idea we don't often hear much about: Nuclear-cytoplasmic ratios. NC ratios are how big the nucleus of a cell is compared to the cytoplasm in the cell. Certain types of cells should have specific NC ratios... and if they don't, it could tell you that something is wrong with the cell. Learn more about what NC ratios can tell us in Cell Size SIM.

To learn more about cells, visit our story page about The Building Blocks of Life.

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Bibliographic details:

  • Article: Cell Size SIM
  • Author(s): Dr. Biology
  • Publisher: Arizona State University School of Life Sciences Ask A Biologist
  • Site name: ASU - Ask A Biologist
  • Date published: June 21, 2023
  • Date accessed: June 20, 2024
  • Link:

APA Style

Dr. Biology. (2023, June 21). Cell Size SIM. ASU - Ask A Biologist. Retrieved June 20, 2024 from

American Psychological Association. For more info, see

Chicago Manual of Style

Dr. Biology. "Cell Size SIM". ASU - Ask A Biologist. 21 June, 2023.

MLA 2017 Style

Dr. Biology. "Cell Size SIM". ASU - Ask A Biologist. 21 Jun 2023. ASU - Ask A Biologist, Web. 20 Jun 2024.

Modern Language Association, 7th Ed. For more info, see

Take a tour inside a cell with the virtual Cell Viewer. Then, test your knowledge in game mode to race the clock while you locate and identify parts of the cell.

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