2-4 AYU Flashcards
1
Q
Selectively permeable
A
Some substances can cross the membrane while others cannot
2
Q
Passive transport
A
The movement of dissolved materials across a cell membrane without using the cell’s energy
3
Q
Diffusion
A
The process of which molecules move from an area of higher concentration to an area of lower concentration
4
Q
Osmosis
A
The diffusion of water molecules across a selectively permeable membrane
5
Q
Active transport
A
The movement of materials across a cell membrane using cellular energy
6
Q
Facilitated diffusion
A
Proteins in a cell membrane form channels through which sugars can pass
7
Q
Endocytosis
A
The cell membrane changes shape and engulfs the particle
8
Q
Exocytosis
A
The reverse of endocytosis, allowing particles to leave the cell
