Cht 7: Membrane Flashcards
1
Q
Plasma membrane
A
Fluid like with proteins floating in them - fluid mosaic model
2
Q
Function of cell membrane parts
A
Phospholipid bilayer
Proteins
Carb side chain
Cholesterol
3
Q
Things enter/exit cells
A
Diffusion Osmosis Facilitated diffusion Active transport Endocytosis Exocytosis
4
Q
Diffusion
A
Follows concentration gradient (high to low)
Movement of solute
Selectively permeable
5
Q
Osmosis
A
Movement of solvent
Isotonic
Hypertonic
Hypotonic
6
Q
Facilitated diffusion
A
Follows conc. gradient (high to low)
Carries proteins that are too large molecules don’t fit in phospholipids
7
Q
Active transport
A
Against concentration gradient
Requires energy by the cell
8
Q
Endocytosis
A
Extremely large particles go IN cell.
Makes vacuole and vesicles
Types phagocytosis and pinocytosis
9
Q
Exocytosis
A
Vacuole or vesicles moves and dumps it’s contents outside the cell
Exit
