in what direction do substances diffuse across the cell membrane?\na down the concentration gradient, from…

in what direction do substances diffuse across the cell membrane?\na down the concentration gradient, from an area of lower to higher concentration\nb down the concentration gradient, from an area of higher to lower concentration\nc against the concentration gradient, from an area of lower to higher concentration\nd against the concentration gradient, from an area of higher to lower concentration

in what direction do substances diffuse across the cell membrane?\na down the concentration gradient, from an area of lower to higher concentration\nb down the concentration gradient, from an area of higher to lower concentration\nc against the concentration gradient, from an area of lower to higher concentration\nd against the concentration gradient, from an area of higher to lower concentration

Answer

Brief Explanations:

Diffusion is the passive movement of substances. It occurs spontaneously from an area where the substance is more concentrated to an area where it is less concentrated, following the concentration gradient.

Answer:

B. down the concentration gradient, from an area of higher to lower concentration