Also, about how much is it per day to rent a car? I know it depends on the car, I'm just looking for an... show more I was thinking about renting a car in Florida when I go there for spring break next week...but I've heard that you need to be 25, and I'm only 22.
H+ and HCO3-. 1  The secretion of H+ in this section of the nephron is mainly a result of the Na+/H+ antiporter in the apical membrane using secondary active transport. 2  HCO3- is reabsorbed here in a different way to other substances. 3  Link to Article.
Water reabsorption is a passive process: water is reabsorbed by osmosis. In most of the nephron, water reabsorption is unregulated and coupled to solute reabsorption.