Because the majority of active transport and reabsorption of solutes (eg. glucose, water) occurs here, the _________ of all the nephrons collectively account for about 6% of one's daily resting ATP and caloric consumption.
A. proximal convoluted tubules
B. distal convoluted tubules
C. loops of Henle
D. collecting ducts
E. glomeruli
Answer: A. proximal convoluted tubules
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