Which of the following statements regarding gated channels is false?
1) Gated channels facilitate the passage of ions such as Cl⁻ and Na⁺ across the plasma membrane.
2) Gated channels facilitate the passage of small, nonpolar molecules such as O2 across the plasma membrane.
3) Gated channels allow for the passive movement of substances across the plasma membrane in a process called facilitated diffusion.
4) Gated channels open or close in response to a signal.