A human cheek cell is a eukaryote. This is because human cells, including those in the cheek, possess a nucleus and other membrane-bound organelles. Prokaryotic cells lack these structures.
Understanding Eukaryotes and Prokaryotes
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Eukaryotes: These cells are complex and contain a defined nucleus housing their genetic material (DNA). They also have various membrane-bound organelles, such as mitochondria, endoplasmic reticulum, and Golgi apparatus, each performing specialized functions. Examples include animal cells, plant cells, and human cells.
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Prokaryotes: These cells are simpler and lack a nucleus. Their genetic material is located in the cytoplasm. They also lack membrane-bound organelles. Bacteria are prime examples of prokaryotic organisms.
Human Cheek Cells: A Closer Look
Human cheek cells are a classic example used in biology lessons to demonstrate eukaryotic cell structure. Their relatively large size and distinct nucleus make them easy to observe under a light microscope. Many resources, including educational websites and lab manuals, utilize human cheek cells to illustrate the key features of eukaryotic cells. For example, this resource from Northern Kentucky University shows a human cheek cell as a typical example of an animal cell. Another source, this page from MSU Billings, explicitly mentions human cheek cells as an example of eukaryotic cells used in a cell structure lab.
Distinguishing Features of Eukaryotic Cheek Cells
- Nucleus: Contains the cell's DNA.
- Cytoplasm: The jelly-like substance filling the cell.
- Cell Membrane: The outer boundary of the cell.
- Organelles: Specialized structures within the cell, like mitochondria (powerhouses of the cell).
Several websites confirm this classification. For example, Homework.Study.com and Quora both clearly state that cheek cells are eukaryotic. Note that some sources incorrectly claim cheek cells are prokaryotic; these are inaccurate.
