SC-005 Science Collection

Cell Membrane

A flexible boundary that regulates what enters and leaves the cell.

Established Biology Series 1: The Anatomy of a Cell · Part 3 of 9

What it is

The cell membrane is a thin double layer of lipids with embedded proteins. It separates the cell from its surroundings while allowing selective exchange.

Why it matters

By regulating movement of nutrients, ions and waste, the membrane helps maintain the conditions cells need. Surface proteins also help cells receive signals and interact with their surroundings.

References

  1. National Human Genome Research Institute. Cell Membrane (Plasma Membrane). Talking Glossary of Genomic and Genetic Terms. Accessed 20 October 2026. genome.gov

Related records

Library records describe established biology and published research. They do not describe an effect of any Natal Health product. These statements have not been evaluated by the Food and Drug Administration.

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