A primary reason that the kidneys have one of the highest metabolic rates of all body organs is that ________.
A) they have membranes of varying permeability to water
B) they operate an extensive set of active-transport ion pumps
C) they are the body's only means of shedding excess nutrients
D) they have an abundance of myogenic smooth muscle

Question

Quizplus · Accepted Answer

The extensive set of active-transport ion pumps in the kidneys contribute to their high metabolic rate. These pumps are necessary for the reabsorption and secretion of various ions and molecules, including sodium, potassium, calcium, and glucose. The energy required for these pumping processes contributes to the overall metabolic activity of the kidneys.

A Primary Reason That the Kidneys Have One of the Highest