Question

The difference between simple diffusion and facilitated diffusion is that facilitated diffusion moves materials from a lower to a higher concentration.

True / False.

Answer 1

Facilitated diffusion is a passive transport process that moves substances down their concentration gradient with the help of membrane proteins, and it is False that it moves materials from a lower to a higher concentration.

Step-by-step explanation:

The statement that facilitated diffusion moves materials from a lower to a higher concentration is False. Like simple diffusion, facilitated diffusion is a passive process, meaning it does not require the input of energy. Instead, facilitated diffusion relies on specific membrane proteins to help move substances down their concentration gradient, from an area of higher concentration to an area of lower concentration. This is in contrast to active transport, where substances are moved against the concentration gradient, typically requiring energy in the form of ATP.

Facilitated diffusion differs from simple diffusion because it involves the use of integral membrane proteins such as channel proteins or carrier proteins that assist in the movement of molecules that might otherwise have difficulty passing through the lipid bilayer of the cell membrane due to their size, polarity, or charge. Examples of substances that undergo facilitated diffusion include glucose and sodium ions (Na+).

Answer 2

False. The diferrence between simple diffusion and facillitated difussion has a relation between energy cost.

Step-by-step explanation:

Facillitated diffusion requires energy expenditure, while simple diffusion can be done without expense. The diffusion facilitated also requires the use of transport proteins since the molecules that cross the membrane are larger than in the simple diffusion that allows the passage to smaller molecules.