Topic 1.4 Flashcards
1
Q
What is simple diffusion
A
When small non-polar molecules are able to pass through the membrane easily without aid
2
Q
What is facilitated diffusion
A
When larger polar molecules can enter the membrane with the help of membrane proteins
3
Q
What is osmosis
A
The movement of water across a semi-permeable membrane from low solute concentration to high concentration (goes with the concentration gradient)
4
Q
What is active transport
A
Molecules that move from an area of low concentration to an area of high concentration (uses energy and goes against concentration gradient)
5
Q
What is endocytosis
A
Movement of materials that are brought into the cell
6
Q
What is expcytosis
A
Movement of materials that are taken out of the cell
