Which reaction involves 02 receiving low energy electrons and h ions to make water

What protects the lining of the stomach from acidic gastric juices?

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.

Coral have a symbiotic relationship with what in order to eat?