Outline how neurons generate a resting potential

Neurons use a sodium potassium pump to maintain a resting potential in the body. Inside a cell normally, there are more sodium in the cell and fewer potassium outside the cell, and hence there is a negative potential within a cell, which amounts to around -70mV. In order to generate a resting potential, ATP is required to change the conformation of an inter-membrane protein, which allows 3 Sodium 2+ ions to be pumped out of the cell by active transport and 2 Potassium 1+ ions to be allowed into the cell by diffusion.

Related Biology IB answers

All answers ▸

Draw the structure of a cell membrane (6 marks).


Outline the four levels of protein structure.


Explain DNA replication (SL).


how would you describe the structure of the small intestine in relation to its function?


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo
Cookie Preferences