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.
Facilitated diffusion (discussed above) is like a siphon in that additional energy is not required but it can only allow movement downhill. Movement against a concentration gradient requires energy. The energy is supplied by ATP which is released by breaking a phosphate bond to produce ADP: ATP --> ADP + P i + energy Cells that use a lot of active transport have many mitochondria to produce the ATP needed.