TLS Online TPP Program

#Question id: 11670


A primary reason that the kidneys have one of the highest metabolic rates of all body organs is that ________.

#I Life Science/ Life Sciences Group – I-V
  1. they have membranes of varying permeability to water
  2. they operate an extensive set of active-transport ion pumps
  3. they are the body's only means of shedding excess nutrients
  4. they have an abundance of myogenic smooth muscle