[Campbell Biology P.184] The text mentions that if kidneys didn't perform their function rel... | Practice Question

The text mentions that if kidneys didn't perform their function related to aquaporins, you would excrete about 180 L of urine per day and have to drink an equal volume of water. What does this statement primarily imply about the role of aquaporins in kidney function?

  • A: Aquaporins are primarily responsible for filtering waste products from the blood.
  • B: Aquaporins help in actively transporting water out of the urine to conserve body water.
  • C: Aquaporins facilitate the rapid reabsorption of a large volume of water from the forming urine back into the body.
  • D: Aquaporins are essential for regulating the concentration of salts in the urine.

Explanation

The mention of excreting 180 L of urine and needing to drink an equal volume of water if aquaporins didn't function implies that aquaporins are crucial for reabsorbing a vast amount of water from the filtrate back into the body, preventing severe dehydration.