Glucose is Found in Glomerular Filtrate but NOT in the Urine

Question

Glucose is found in glomerular filtrate but NOT in the urine because
A)the kidney stores glucose as glycogen.
B)kidney cells require glucose because energy is needed for active transport.
C)glucose is reabsorbed back into the bloodstream.
D)glucose is converted to amino acids in the kidney.
E)glucose molecules are too large to pass through the loop of the nephron (loop of Henle).

Accepted Answer

Glucose is filtered in the glomerulus of the nephron, but normally all glucose gets reabsorbed back into the bloodstream in the proximal tubule by glucose transporters in the renal tubular cells. This process is called tubular reabsorption. Therefore, glucose should not normally be found in the urine.