How are glucose and amino acids reabsorbed in the proximal tubule?

Question

How are glucose and amino acids reabsorbed in the proximal tubule?​

Quizplus · Accepted Answer

Glucose and amino acids are both reabsorbed in the proximal tubule through secondary active transport, specifically facilitated diffusion. This process involves the use of a sodium/glucose or sodium/amino acid cotransporter, where sodium moves down its concentration gradient and carries glucose or amino acids with it against their concentration gradient. This type of transport is a form of secondary active transport because it utilizes the energy from the sodium gradient established by primary active transport (i.e. the Na+/K+ ATPase pump).

How Are Glucose and Amino Acids Reabsorbed in the Proximal