How Do Ions Move From Low Concentration

1- How do ions move from low concentration to high concentration? (Against a concentration gradient)Using cellular energy (ATP)Passively, by diffusion2- Sodium (Na+) is more concentrated outside of cells than inside cells. What would happen if the cell membrane permeability to sodium suddenly changed?Sodium rushes into the cell passively (net inward movement)Sodium rushes out of the cell passively (net movement outward)Nothing – sodium still does not cross the cell membrane

Originally posted 2018-07-19 15:53:17. Republished by Blog Post Promoter

How do ions move from low concentration

Question

1- How do ions move from low concentration to high concentration? (Against a concentration gradient)

Using cellular energy (ATP)
Passively, by diffusion

2- Sodium (Na+) is more concentrated outside of cells than inside cells. What would happen if the cell membrane permeability to sodium suddenly changed?

Sodium rushes into the cell passively (net inward movement)
Sodium rushes out of the cell passively (net movement outward)
Nothing – sodium still does not cross the cell membrane