Cells cannot survive on their own. They need energy to stay alive. They need the energy to perform functions such as growth, maintaining balance, repair, reproduction, movement, and defense.
The answer is D. in animal cells, the cell membrane allows materials in and out of the cell, while the mitochondria uses nutrients to make energy (ATP) for the cell.
Explanation: In facilitated transport, also called facilitated diffusion, materials diffuse across the plasma membrane with the help of membrane proteins. Hopefully this helps!
