Transepithelial glucose transport uses a symporter to transport glucose up a concentration gradient by:
A)coupling glucose transport to proton movement.
B)coupling glucose transport to Na⁺ movement.
C)coupling glucose transport to Ca²⁺ movement.
D)coupling glucose transport to Cl- movement.

Question

Quizplus · Accepted Answer

Transepithelial glucose transport uses a symporter that couples glucose transport to Na⁺ movement. Glucose and Na⁺ are transported across the epithelium simultaneously, with Na⁺ moving down its electrochemical gradient, driving glucose against its concentration gradient. This process is known as secondary active transport.

Transepithelial Glucose Transport Uses a Symporter to Transport Glucose Up