An important difference between a cuboidal epithelial cell of the proximal versus the distal
convoluted tubules is that
A) the former only secretes, the latter only filters.
B) one lies in the renal cortex, the other in the medulla.
C) only one has a folded basolateral membrane containing enzymes for ion transport.
D) the proximal tubule cells have long microvilli that are fewer than or absent from the distal
tubule cells.