This takes place when molecules diffuse across the cell membrane by travelling ... The proteins pump sodium out of the cells and potassium into the cells. This helps nerve cells to transmit ...

Imagine a world where food on grocery store shelves is ranked by its healthiness, with simple, research-backed scores. In ...

Some enzymes can be found embedded within the cell membrane. Other proteins found embedded within the membrane act as: pumps - for example the sodium potassium pump that pumps sodium out of the ...