Topic 29 Flashcards
1
Q
What are active electric properties of living matter?
A
If the cells are excitable
2
Q
Describe excitability
A
Electric potentials can bee measured between the cytoplasm and the extracellular regions
3
Q
What is resting potential?
A
The electric potential in resting cells
4
Q
Describe the diffusion potential
A
Caused by some ions moving faster than others, causing a build up of charge
Not permanant, ions eventually slow.
5
Q
What is Donnan-Potential?
A
When a membrane is impermiable to one kind of ion.
The concentration gradient is balanced by the forming membrane potential
