Final answer:
Channel proteins transport ions significantly faster than predicted by Fick's law, moving up to tens of millions of molecules per second.
Step-by-step explanation:
The statement that many channels transport ions at rates faster than those predicted by Fick's law is true. Channel and carrier proteins in cell membranes facilitate the movement of substances across the membrane. The rates at which they transport materials can be significantly faster than would be expected from simple diffusion as described by Fick's law.
Specifically, channel proteins facilitate diffusion at an incredibly rapid rate, moving tens of millions of molecules per second, while carrier proteins operate at a slower rate, typically managing a thousand to a million molecules per second. This discrepancy between theoretical diffusion rates and the actual rates observed in biological systems underscores the efficiency of these protein mechanisms, playing a crucial role in cellular function.