Question

Select all that apply. Which molecules need facilitated diffusion to move across the plasma membrane? *water *glucose *oxygen *carbon dioxide *amino acids

Answer 1

Water and oxygen
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Answer 2

Answer;

-Amino acids, glucose,

Explanation;

-Facilitated diffusion involves the movement of molecules in the direction determined by their relative concentrations inside and outside of the cell.

-No external source of energy is provided, so molecules travel across the membrane in the direction determined by their concentration gradients and, in the case of charged molecules, by the electric potential across the membrane.

-Facilitated diffusion therefore allows polar and charged molecules, such as carbohydrates, amino acids, nucleosides, and ions, to cross the plasma membrane.