B4d - Diffusion And Osmosis Flashcards
1
Q
What is turgid?
A
Plant elks that fill up with water pressure against the cell wall, it becomes hard and rigid. Able to photosynthesise
2
Q
What is flaccid?
A
Put into salt water, becomes sold and floppy
3
Q
What is plasmolysed?
A
No pressure left, units can’t photosynthesise (no water left in cell)
4
Q
Define osmosis
A
Movement of water molecules from an area of high water conc to an area of low water conc across a partially permeable membrane
5
Q
How can the rate of diffusion increase?
A
- shorter distance
- greater conc
- greater surface area
6
Q
Define diffusion
A
Net movement of particle from an area of high conc to and area of low conc
