Question

which of the following is true about facilitated diffusion? requires energy moves molecules to a high concentration moves molecules through a protein channel transports water question 4 1 pts facilitated diffusion is considered a type of passive transport because: it requires a transport protein it moves substances it doesnt require energy it only occurs in animals

Explanation:

• Facilitated diffusion is a passive transport process. It does not require energy (\(ATP\)) as it moves molecules down their concentration gradient (from high to low concentration). It uses protein channels or carriers.
• For the first question:
• "requires energy" is wrong as it is passive.
• "moves molecules to a high concentration" is wrong (moves down gradient).
• "transports water" is wrong (osmosis for water in simple cases, but facilitated diffusion can be for other molecules too; main feature is protein channel use).
• "moves molecules through a protein channel" is correct as that's a key aspect of facilitated diffusion.
• For the second question:
• "it requires a transport protein" is a feature but not why it's passive.
• "it moves substances" is too general.
• "it doesn't require energy" is correct as passive transport (like simple diffusion and facilitated diffusion) doesn't need energy input.
• "it only occurs in animals" is wrong (occurs in many organisms).

Answer:

First question: moves molecules through a protein channel.
Second question: it doesn't require energy.