2.1 Exchange with the Environment Flashcards
1
Q
diffusion
A
the movement of particles from regions of higher density to regions of lower density
2
Q
osmosis
A
the diffusion of water through a semipermeable membrane
3
Q
passive transport
A
the movement of substance across a cell membrane without the use of energy by the cell
4
Q
active transport
A
the movement of substance across a cell membrane that requires the cell to use energy
5
Q
endocytosis
A
the process by which a cell membrane surrounds a particle and encloses the particle in a vesicle to bring the particle into the cell
6
Q
exocytosis
A
the process in which a cell releases a particle by enclosing the particle in a vesicle that then moves to the cell surface and fuses with the cell membrane
