Here are other long.-range business jets that can put a good fight to current most common commercial airliners in terms of their range: Dassault Falcon 8X. Cabin size: 42 feet 8 inches long, 6 feet 2 inches high, 7 feet 8 inches wide Typical passenger capacity 12 to 16. Baggage capacity: 141 cubic feet.
Facilitated diffusion does NOT require energy. It is facilitated because of the help of a transport protein, but the molecules are still going down the concentration gradient. Facilitated diffusion does NOT require energy, as it is still going down the concentration gradient. diffusion does NOT require energy. diffusion is not a form of active transport.
So, with simple diffusion, oxygen moves into the lungs through the cell membrane and carbon dioxide moves out the same way. Remember, this happens along the concentration gradient and does not require energy. Lesson Summary. Simple diffusion does not require energy and occurs along the concentration gradient. The concentration gradient is the process of particles moving, or diffusing, from an area of higher concentration to an area of lower concentration.