Why does glucose appear in the urine of a diabetic?
A. The carriers for glucose reabsorption reach their maximum rate of transport.
B. The ascending limb of the loop of Henle secretes glucose into the urine.
C. No glucose is filtered into the glomerular filtrate.
D. The volume of urine is too great to filter.
E. The kidneys produce glucose in diabetes.
Answer: A
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