Question

when you eat a meal, proteins in your food are broken down in your gut into amino acids. these amino acids are taken up by the cells that line your intestine. the amino acids then diffuse across your intestinal cells, across the membrane on the other side of the cells, and into your bloodstream where they travel to other cells to be used as building blocks for new proteins. which diagram best illustrates the direction and mechanism by which amino acids move from your intestinal cells into your bloodstream?

Explanation:

Amino - acids move from intestinal cells into the bloodstream through facilitated diffusion. This process requires a transport protein. The diagram with a transport - like structure (the one with the purple structure representing a transport protein) is the correct one as amino acids are polar molecules and cannot freely diffuse through the non - polar lipid bilayer of the cell membrane.

Answer:

The diagram with the purple transport - like structure facilitating the movement of amino acids from the intestinal cell (where there are more amino acids) to the bloodstream (where there are fewer amino acids).