quiz 12/6 Flashcards
1
Q
what is function of cell membrane
A
protect cell, flexible support, regulates what goes in and out.
2
Q
cell membrane is
A
phospholipid bilayer, selectively permeable, fluid mosaic model
3
Q
phospholipid bilayer is
A
two layers of phospholipids, thin flexible barrier surrounding cell, embedded protein and cholesterol
4
Q
selectively permeable
A
the membrane determines what can and can’t enter cell
5
Q
fluid mosaic model
A
parts of membrane can move around sideways (slide back and forth)
6
Q
cholesterol
A
maintains fluidity and increases stability of membrane, prevents tight packing of saturated-fatty acids
7
Q
what can get in and out
A
small non-polar molecules can pass thru membrane more easily
8
Q
what needs to cross thru membrane
A
sugar, lipids, amino acids, oxygen, water, waste
