Please help me Important Ions move from low to high concentration while using a membrane protein. Which of the following is true? Question 5 options:

A. It's moving down the concentration gradient.

B. Energy is needed to make this happen

C. It's facilitated diffusion.

D. It's osmosis.

A) it is moving down the concentration gradient

Explanation:

Brownian motion will cause the molecules (or ions) to spread/diffuse from where they are more concentrated to where they are less concentrated until they are equally distributed in that space (Figure). When molecules move in this way, they are said to move down their concentration gradient.