Passive membrane transport processes:move solutes down their concentration gradients in the absence of energyrequire the input of energy to move a solute across the plasma membraneonly transport lipid-soluble solutesalways require the use of channel or carrier proteins to move solutes across the plasma membrane

The statement seems to be a mix of different characteristics of passive membrane transport processes. Let's break it down:

1. "Move solutes down their concentration gradients in the absence of energy": This is true. Passive transport processes, such as diffusion and osmosis, move molecules from an area of higher concentration to an area of lower concentration without the need for energy.

2. "Require the input of energy to move a solute across the plasma membrane": This is false. Passive transport does not require energy. It is active transport that requires energy to move molecules against their concentration gradient.

3. "Only transport lipid-soluble solutes": This is false. While it's true that lipid-soluble molecules can easily pass through the lipid bilayer of the cell membrane, passive transport also includes mechanisms like channel-mediated diffusion that allow the movement of ions and other small, polar molecules.

4. "Always require the use of channel or carrier proteins to move solutes across the plasma membrane": This is also false. While some forms of passive transport, like facilitated diffusion, do require channel or carrier proteins, others, like simple diffusion and osmosis, do not.