Question

which of the following is true about facilitated diffusion?
moves molecules through a protein channel
requires energy
moves molecules to a high concentration
transports water

question 4
2 pts
facilitated diffusion is considered a type of passive transport because:
it doesnt require energy
it moves substances
it requires a transport protein
it only occurs in animals

Explanation:

Facilitated diffusion is a type of passive transport. Passive transport means no energy (ATP) is required as substances move down their concentration gradient (from high to low concentration). Facilitated diffusion uses protein channels (like ion channels for ions) or carrier proteins. Water transport is mainly through osmosis (a special case of diffusion for water, sometimes through aquaporins which can be considered a form of facilitated diffusion for water in some contexts, but the first question's most general and correct answer among the options is about moving through a protein channel). For the second question, the key feature of passive transport (including facilitated diffusion) is that it doesn't require energy. Moving substances is a general feature of transport (active also moves substances). Requiring a transport protein is a feature of facilitated diffusion but not what makes it passive. Occurring only in animals is false (plants etc. also have it).

Answer:

For the first question: moves molecules through a protein channel.
For the second question: it doesn't require energy.