Question

How are the proteins used for active transport different from those used for facilitated diffusion?

1 The proteins for facilitated diffusion must attach to a carbohydrate to work.

2 The proteins used in facilitated diffusion create larger openings in the cell membrane.
3 The proteins involved in active transport must be powered by ATP to work.
4 The proteins that carry out active transport move only the largest molecules.

thx alot