Cell Memberane Flashcards
Also known as the plasma membrane
Cell Membrane
Regulates the transport of materials entering and exiting the cell
Cell Membrane
Cell membrane’s function for the cell
Protection
Transport nutrients and toxic substance (Selectively permeable)
Cell to cell interaction via proteins (Receive and respond to stimuli)
Seperates the interior from the outside environment
Sugar and a protein moiety
Glycoproteins
Fat and a protein
Lipid protein
Plasma membrane was identified
1890
Chemical components of plasma membrane have been discovered
1915
Proposed that cell membrane is like a sandwich
1935 by Hugh Davson & James Danielli
Created in 1972 by Singer and Nicolson
Fluid Mosaic Model
Membrane is fluid and flexible rather than a rigid and solid barrier. Made up of different molecules namely phospholipids, proteins, carbohydrates, and cholesterol.
Fluid Mosaic Model
Glycerol
Two-fatty acid tails (Saturated & Unsaturated)
Phosphate-linked head group
Phospholipids
Glycerol & Phosphate-linked head group
Hydrophilic head
Hydrophobic tails
Two-fatty acid chains
Water-loving
Forms H+ bonds with water and other polar molecules
Hydrophilic head
Water-fearing
interact with non-polar molecules
Hydrophobic tails