The cell is morphologic and functional unit of the human body.

The cell is composed from: Membrane, Cytoplasm, Core, Cell Organic (common, specific).

Membrane cell: – Lipo-protein double layer : hydrophilic pole outward, inward hydrophobic pole
- contains protein molecules
- covered glicocalix
- Thickness of 7.5 to 10 nm
- Composition: 55% protein, 25% phospholipids, 13% cholesterol, other lipids and 4% 3% carbohydrate
- Double-layer lipid membrane is fluid
- Proteins and other substances dissolved or floating in the cell membrane thickness, tend to run on every surface / thickness they
- Integral proteins serve as transporters or channels made transmembrane
- Peripheral proteins are attached to proteins and their role full enzyme
- Glicocalixis consists of carbohydrates attached to proteins or molecules (glycoproteins) or membrane lipids (glicolipide)
- May proteoglicanics find related lax the outside cell
- Glicocalixis – give the electro-negative exterior load cell
- Tie cells between them
- Some carbohydrates serve receiver (eg insulin)