What must be happening to the kidney’s membrane filters if such
large molecules are found in the urine? Which one is correct?
| a) In a normal kidney, only small molecules pass through the glomeruli (the kidney’s semipermeable membrane). If larger molecules are able to pass through the membrane, the pores in the membrane are larger than normal, an indication of kidney disease. |
| b) In a normal kidney, only small molecules pass through the glomeruli (the kidney’s semipermeable membrane). If small molecules are not able to pass through the membrane, the pores in the membrane are smaller than normal, an indication of kidney disease. |
| c) In a normal kidney, big molecules pass through the glomeruli (the kidney’s semipermeable membrane). If big molecules are not able to pass through the membrane, an indication of kidney disease. |
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