Question

what is required for facilitated diffusion to take place? multiple choice carbohydrate carriers enzymes lipid or carbohydrate carriers carrier proteins lipid carriers

Explanation:

Facilitated diffusion is a passive - transport process. It requires carrier proteins or channel proteins to move substances (such as polar molecules and ions) across the cell membrane down their concentration gradient. Carbohydrate carriers, lipid carriers, and enzymes are not what are required for facilitated diffusion. Carrier proteins bind to the specific substance and change shape to move it across the membrane.

Answer:

D. carrier proteins