Cell Membrane Structure and Function Flashcards
1
Q
Importance of Selectively Permeable Membranes
A
Cells need physical barrier between their contents and the outside environment.
Insoluble in water to maintain the integrity of the barrier.
Permeable to water to allow water to flow in and out of cell.
2
Q
Plasma Membrane vs Intracellular Membrane
A
Plasma membranes surround the whole cell, but intracellular membranes compartmentalize functions within the cell.
3
Q
Fluid mosaic model
A
Descriptive of all biological membranes
Envisions a membrane as two fluid layers of lipids with proteins within and on the layers
4
Q
Classes of Membrane Lipids
A
Phospholipids, glycolipids, and sterols
5
Q
Polar Head
A
Polar head of phospholipids due to negatively charged phosphate group linked to a positively charged group.
6
Q
A
