PLASMA MEMBRANE Flashcards
1
Q
Cell Membrane Structure
A
- flexible phospholipid bilayer
- protein molecules and cholesterol, carbohydrate molecules (glycoproteins)
2
Q
Fluid Mosaic Model
A
“Fluid”
- Lateral movement of phospholipids
- Transverse movement occurs once per 30 days
- proteins float in the membrane, but due to size they move slowly
“Mosiac”
- Phospholipids, proteins, glycoproteins, cholesterol, etc
3
Q
Cell Membrane Function
A
- selectively permeable barrier
- substances to cross more easily
4
Q
Surface Area to Volume Ratio
A
surface area/ volume
Surface area: 6s^2
Volume: s^3
Folds in membrane inc surface area to volume ratio
