The pharynx is the structure in the body that serves as a pathway of both air and food. How does the body make sure that food does not get into the lungs?

What claim did thorne make? what evidence supported his claim?

What is the significance of the protein-lined pits? a. protein attracts other proteins needed for atp synthesis within the cell. b. protein-lined pits are able to transport one molecule at a time down the concentration gradient within the cell. c. the polarity of proteins allows other polar molecules to attach and be transported in the cell by transport channels. d. receptors within the pits allow ligands to fuse and be transported into the cell by endocytosis.

Identify the structures ! 20 points