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usa community Colle saplinglearning.com/ibisams/mod/ibis/view.php?id-5916146 tion 14 of 22 Sapling Learning Which statements descnibe examples of facilitated diffusion? A liver cell takes in ethanol molecules directly through its plasma membrane after the ingestion of alcohol. Aucot oro ohtratian raes suply using a membrane protain to transport A neuron allows sodium ions to enter the cell down their concentration gradient using a membrane channel. An inner ear hair cell allows potassium ions to flow down their concentration gradient after sound waves stimulate a membrane protein A neuron moves sodium ions out of the cell against their concentration gradient using a membrane pump and cellular energy 1 An epithelial cell releases calcium ions against their concentration gradient using a membrane pump and the energy of another concentration gradient. int

Explanation / Answer

Facilitated diffusion is diffusion with the help of a transporter down the concentration gradient.

It is similar to diffusion. The only difference is the presence of a transporter.

So, second statement says that transport is taking place with the help of a transporter.

In rest statement transporter down the concentration gradient is not mentioned.

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