Biology - Excretory Products and their Elimination Question with Solution | TestHub
Which of the following correctly matches the substance with the process of its movement in nephron?
Options:
Answer:
Solution:
In the nephron, different substances are reabsorbed and secreted at various segments to maintain the ionic and acid-base balance of body fluids.
Urea is passively reabsorbed in the proximal convoluted tubule (PCT) and the collecting duct, not actively.
Glucose is completely reabsorbed actively in the PCT, not secreted in the distal convoluted tubule (DCT).
Sodium ions are reabsorbed passively in the thin ascending limb but actively in the thick ascending limb of the loop of Henle.
Hydrogen ions, potassium ions, and ammonia are selectively secreted into the filtrate in the DCT to maintain the pH and sodium-potassium balance in the blood. Thus, the secretion of hydrogen ions in the DCT is a correct match.
Answer: Hydrogen ions - Secreted in DCT
