1. Suppose substance "A" is reabsorbed about 30%, whereas substance "B" is secreted about 30%. Explain how their renal plasma clearance values relate to each other and to the glomerular filtration rate (GFR).
2. It is possible for someone to have an abnormally high plasma glucose concentration and yet not have glycosuria?
Explain your answer. Relate this answer to a person who eats a couple of sugar-coated doughnuts compared to a person with uncontrolled diabetic mellitus.
3. Proteinuria and the presence of numerous casts in the urine sediment are frozen accompanied by edema. what is the relationship between these symptoms?