Nephron Structure and Functions · NCERT Biology

Which of the following is NOT a function of the Proximal Convoluted Tubule (PCT)?

  1. Reabsorption of nearly all essential nutrients from the filtrate
  2. Maintenance of blood pH and ionic composition
  3. Selective secretion of hydrogen and potassium ions into filtrate
  4. Concentration of urine by preventing water reabsorption
Show answer and explanation

Correct answer: Concentration of urine by preventing water reabsorption

The PCT is responsible for the bulk reabsorption of water and solutes. Concentrating the urine is primarily the function of the loop of Henle and the collecting duct.

Difficulty: Medium Question 9 of 20

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