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.
secretion and reabsorption of solutes Proximal convoluted tubules reabsorb all the good stuff (nutrients) and most of the ions. Bad stuff left in the filtrate (urea) to be peed out, also actively excreted (NH4+, creatinine, organic acids). Loop of Henle reabsorbs water and salt using the countercurrent mechanism.