Chapter 15 Flashcards
1
Q
What is diffusion?
A
- net movement of particles from an area of higher concentration to an area of lower concentration
- no need partially permeable membrane
2
Q
What is osmosis?
A
- net movement of water particles from a region of higher water potential to a region of lower water potential
- only involves** water particles**
- needs a partially permeable membrane
3
Q
What happens to an animal cell if it is in lower water potential?
A
it becomes crenated
4
Q
What happens to a plant cell when it is in higher water potential?
A
It becomes turgid
4
Q
What happens to an animal cell if its under high water potential
A
it becomes lysed
5
Q
What happens to a plaant cell when it is in lower water potential?
A
it becomes flaccid (plasmolysed)
6
Q
What is active transport?
A
energy used to move particles of a substance against concentration gradient, from** low to high concentration**
7
Q
What is the difference between diffusion and osmosis?
A
diffusion -** any type** of particle, no need partially permeable membrane
osmosis - only** water particles**, needs a partially permeable membrane
