Using what you know about the chemical makeup of stomach contents and the control of food moving through the gi tract, provide a reason some people get heartburn. what is actually happening to cause this burning sensation in the chest?

Which kingdom includes some organisms that have no nucleus and can live in an environment with an extremely high salt content

Why does bubbling occur when vinegar mixed with baking soda

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.