Cells-Transport Across Cell Membranes Flashcards
1
Q
Cell membrane
A
Composed of phospholipids and proteins
2
Q
Concentration gradient
A
Difference in concentration between two solutions
3
Q
Diffusion
A
Movement of molecules down a concentration gradient
4
Q
Osmosis
A
Movement of water molecules from a high water concentration to a low water concentration through a selectively permeable membrane
5
Q
Passive transport
A
Movement of molecules without energy
6
Q
Plasmolysed
A
Description of a plant cell where water has left the cell by osmosis causing the vacuole to shrink
7
Q
Selectively permeable
A
A membrane that controls of molecules depending on their size
8
Q
Turgid
A
Description of a plant cell where water has entered the cell by osmosis causing the vacuole to swell
9
Q
Active transport
A
Transport of molecules against the concentration gradient
