Topic 3 Flashcards
1
Q
Diffusion definition
A
The net movement of molecules from a region of higher concentration to a region of lower concentration
2
Q
What factors affect diffusion
A
Surface area
Temperature
Concentration
3
Q
Osmosis meaning
A
Special kind of diffusion involving water molecules when two solutions are separated by a partially permeable membrane
4
Q
Turgid meaning
A
Swollen
Hard
5
Q
Flaccid meaning
A
Floppy and loose
6
Q
Plasmolysed meaning
A
When water leaves the cell the cytoplasm starts to move away from the cell wall
7
Q
Turgor pressure meaning
A
When water pushes against the cell wall
8
Q
What is active transport
A
Movement of ions or molecules in or out of a cell through the cell membrane against a concentration gradient
