Normally,concentrations of metabolically important substances,such as glucose,are
A)high in glomerular filtrate,but only a trace in urine.
B)low in glomerular filtrate,but high in urine.
C)high in both glomerular filtrate and urine.
D)low in both glomerular filtrate and urine.
E)excluded from entering the excretory system altogether.

Question

Quizplus · Accepted Answer

Metabolically important substances, such as glucose, are normally completely reabsorbed from the glomerular filtrate by the proximal convoluted tubule and returned to the blood. Thus, there should only be trace amounts of these substances in the urine that is excreted.

Normally,concentrations of Metabolically Important Substances,such as Glucose,are