Question

The concentration of glucose in plasma is 100 mg/100 mL, and the GFR is 125 mL/min. How much glucose is filtered per minute?

Answer 1

All of the glucose presents is filtered by glomerulus. Hence, all of the glucose that reaches glomerular in one minute with 125 ml of plasma (as GFR is 125ml/min ) is filtered.

i.e. 100 ml of plasma contains 100 mg of glucose, 125 ml of plasma that is being filtered will contain 125 mg of glucose. Hence, 125 ml of glucose is filtered per minute.