Which of the following processes is BEST represented by the illustration?
facilitated diffusion, simple diffusion, or osmosis?

b is dominant over the allele for the white fur.

many other transport proteins, often called pumps, move materials against a concentration gradient. active transport drives molecules across a membrane from a region of lower concentration to a region of higher concentration. this process, shown in figure 5.1, uses transport proteins powered by chemi- cal energy.