<span>Epithelial cells in the stomach require the use of coupled transport to make gastric acid. They use hydrogen potassium ATPase, which is an electroneutral pump, and exchanges potassium for hydronium in order to produce the gastric acid.</span>
I would say DNA needs to be in a double helix so it can be unraveled and duplicated during cell mitosis
Sorry i needed the points... good luck tho