1. Patients with chronic kidney disease are not likely to develop hyperkalemiaas long as they secrete adequate levels of: A) antidiuretic hormone B) Renin C) Aldosterone D) Natriuretic peptide: Answer Aldosterone 2. In the Randall's plaque pathway for kidney stone formation, the stone is: A) attached to plugs protruding from the opening of Bellini ducts B) fixed to the surface of a renal papilla at sites of interstitial apatite plaque C) formed in free solution in the renal system collection D) formed in the interstitial or tubular compartment of the renal medulla: Answer fixedto the surface of a renal papilla at sites of interstitial apatite plaque 3. Which of the following is NOT associated with renal stone development? A) high urine protein B) low urine citrate C) high urine calcium D) low urine volume: Answer High urine protein 4. The kidneys help regulate acid-base balance by: A) secreting carbon dioxide B) producing ammonia C) reabsorbing phosphates D) secreting sodium chloride: Answer Producing ammonia