When materials diffuse across a membrane, they move from of concentration to an area of concentration along the concentration gradient.

When materials diffuse across a membrane, they move from an HIGHER area of concentration to a LOWER area of concentration along the concentration gradient.

Explanation:

A concentration gradient is the process where particles, also called solutes, move through a solution or gas from an area (usually separated by a membrane) with a higher number of particles to an area with a lower number of particles, in other words, from a higher concentration area to a lower concentration until the concentration of substances is uniform throughout.

I hope you find this information useful and interesting! Good luck!

it's     c       this is a cell (b) with a nucleus (c) containing dna (a). the dna is organized into chromosomes (d). a section of the chromosome that codes for a trait is called a gene (e).

kelp are large brown algae that live in cool, relatively shallow waters close to the shore. they grow in dense groupings much like a forest on land. these underwater towers of kelp provide food and shelter for thousands of fish, invertebrates, and marine mammal species.

e) all of the above