Lecture 15 extras Flashcards
1
Q
Functions of biological membranes
A
1) defines cell boundary, define enclose compartments, control movement of material in and out of the cell, enable interactions between cells & provide scaffold for biochemical activities
2
Q
Micelle
A
Fatty Acid’s with only one hydrophobic chain
3
Q
Where do phospholipids come from?
A
- synthesis occurs in pre-existing membrane
- occurs in multi-step process ay the cytosol and the outer ER membrane
4
Q
Membrane proteins diffused within the bilayer: move easily or restricted?
A
movement is restricted
5
Q
Myelin Sheaths of Neuronal Cells
A
Serves as insulation and increases the speed of electrical impulses along the myelinated fiber
- LOW amounts of protein
6
Q
Why is a balance between ordered and disordered structure important?
A
- mechanical support
- membrane assembly
- dynamic interactions between components
