W4 Lipids Flashcards
what are the 4 components of phospholipids
1+ fatty acids
binding platform
phosphate residue
an alcohol
What type of cell is cholesterol found in
Eukaryotic
How is cholesterol arranged
Parallel the to fatty acid chain
What are archaeal membranes
Nonpolar chains attached by ether
Alkyl branched chains
What are the common feature of membranes
Non covalent
Highly asymmetric
Very fluid
Why do we need membranes
Transport
Adhesion
Signalling
Excretion
Why is biomolecular sheet preferred over micelle
Due to bulkiness of FA
How can liposomes be made steps
H2O + phospholipid
Sonication
gel filtration
traps molecules in lipid vesicles
What is bacteriorhodopsin
Protein that uses light to transport protons
What are porins
Pore allows sugars + amino acids to diffuse
how is diffusion observed of membrane proteins
using FRAP
which membrane protein is very mobile
rhodopsin
