Salmon are anadromous fish. This means that they live in the ocean mostly, but breed in freshwater. A freshwater pike is unable to move into the ocean from a river.
Based on your knowledge of cellular membranes, explain what must be different
about salmon and pike.

the solute can move "downhill," from regions of higher to lower concentration, relying on the specificity of the protein carrier to pass through the membrane. this process is called passive transport or facilitated diffusion, and does not require energy.

it marks things for degradation via the proteasome. it alters there celluar location.

d we did this already