Which substance can freely pass through the filtration membrane, but is neither reabsorbed by the renal tubules nor secreted by them? Its clearance rate equals
Correct answer: A. equal to glomerular filtration rate
The substance that can freely pass through the filtration membrane but is neither reabsorbed nor secreted by the renal tubules has a clearance rate equal to the glomerular filtration rate. This is because it gets filtered out of the blood but does not get reabsorbed or secreted back into the bloodstream.