Biological role of ions

Question	Answer
Sodium-potassium pump pumps?	Sodium out and potassium in to the cell.
A membrane is more permeable to ....... than to ........	potassium,sodium
The inside of a cell is more The outside of a cell is more	negative positive
Voltage inside the cell is	-70mV
This value is known as the?	Resting membrane voltage
Excitable cells are?	Muscle and nerve cells
The special set of ion channels is called	Gated Ion channels
These channels can either be in an..... or......state.	open or closed
At rest the membrane is	Polarised.
When an excitable cell is activated, the following sequence of events happens?	Polarised (inside negative) Depolarised (inside positive) Repolarised (inside negative)
The change in membrane voltage in excitable cells is called?	ACTION POTENTIAL

Resource summary

	Created by Morgan Morgan over 10 years ago