PLEASEE HEL Which proteins are involved in simple diffusion?

Channel proteins, gated channel proteins, and carrier proteins are three types of transport proteins that are involved in facilitated diffusion. A channel protein, a type of transport protein, acts like a pore in the membrane that lets water molecules or small ions through quickly.

Explanation:

they float because they are less dense than the water itself

something denser than water, like a rock, will sink to the bottom

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