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MCAT Question A Day - 6/9/13

Membrane carrier molecules in the cells of the proximal convoluted tubules are capable of reabsorbing normal amounts of glucose that have been filtered out of the blood at the renal corpuscle. What happens when hyperglycemic blood has excess glucose filtered at the renal corpuscle?

A.  Membrane carrier molecules at the proximal convoluted tubules will increase their maximum transport rate.
B.  Extra carrier molecules will be synthesized in the cells of the proximal convoluted tubules.
C.  The excess glucose will continue in the filtrate and be excreted in the urine.
D.  Hormones will stimulate a second round of glucose reabsorption at the distal convoluted tubules.

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