Ch.3 (Membrane Transport) Flashcards
1
Q
Passive Transport
A
substances are transported across the membrane WITHOUT energy input
2
Q
Active Transport
A
cell provides ATP that drives the transport substances
3
Q
Diffusion
A
process that molecules and ions tend to scatter themselves throughout available space
4
Q
Osmosis
A
diffusion of H20 through a selectively permeable membrane
5
Q
Solute pumping
A
uses ATP to energize solute pumps
6
Q
Concentration Gradient
A
process of higher # of particles go to lower # of particles
7
Q
Simple diffusion
A
unassisted diffusion of solutes through the plasma membrane
8
Q
Exocytosis
A
moves substances OUT of cell
9
Q
Endocytosis
A
encloses substances INTO the cell
10
Q
Phagocytosis
A
acts as a “cell eater” by ingesting bacteria/foreign debris
11
Q
Pinocytosis
A
plasma invaginates to form a tiny pit around extracellular fluid
