All epithelia have two surfaces, an apical surface and a basal surface, that differ in both structure and function. This property is called polarity. TRUE.
- The majority of cell types have polarized structures or protein localization patterns that enable them to carry out certain tasks.
- Cells having apical and basolateral membrane domains separated by adherents and tight junctions are indicative of epithelial cell polarity.
- Cell polarity is the term for the inherent asymmetry that can be seen in a cell's form, organization, or combination of cellular components.
- The majority of epithelial cells, cells that migrate, and cells that are growing need some kind of cell polarity to operate.
- A phospholipid bilayer or sandwich makes up the majority of the cell membrane. While the tails (the lipid component) are non-polar, the heads (the phospho part) are polar.
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