Plasma Membrane-Fluid Mosaic Model Flashcards
By what is the Plasma Membrane-Fluid Mosaic Model determined?
Electron microscopy
What does the lipid bilayer of the cell membrane determine?
Permeability characteristics
Lipids of the bilayer composition
- Phospholipids
- Glycolipids
- Cholesterol
To describe having a polar/hydrophilic, and non-polar/hydrophobic portion
Amphipathic
Which bilayer composition is amphipathic?
Phospholipids
Portion of the phospholipids that face the inner and outer membrane surfaces and interact with the fluid environments
Polar/hydrophilic
Portion of the phospholipids that interact with one another to form the inner core of the bilayer
Hydrophobic/non-polar
The most abundant lipid component of the cell membrane
Phospholipids
Phospholipid function
Anchors proteins that have enzyme/transport functions
Where on the membrane are glycolipids present?
Outer face/leaflet
What does the extension of carbohydrates from the outer leaflet form part of?
Glycocalyx
Glycolipid functions
- Cell-to-cell communication
- Cell-to-matrix interaction
Where is cholesterol located?
Both surfaces of the cell
Cholesterol function
Maintains the cell’s structural integrity
To what is the bilayer essential?
- Membrane fluidity
- Activities such as endocytosis/exocytosis
