Passive Transport in Cells

Carbon dioxide (correct)

Water

Proteins

Oxygen

To allow all materials into and out of the cell

To regulate the cell's internal temperature

To prevent all materials from entering and leaving the cell

To selectively allow some materials into and out of the cell (correct)

By actively pumping against the concentration gradient

By moving from an area of high concentration to an area of low concentration (correct)

By moving from an area of low concentration to an area of high concentration

By using energy from ATP

<p>When there is a concentration gradient between the inside and outside of the cell (C)</p> Signup and view all the answers

<p>Facilitated diffusion (B)</p> Signup and view all the answers