A) Excreted plasma proteins are acidic.
B) Potassium and sodium exchange generates acidity.
C) Hydrogen ions are actively secreted into the filtrate.
D) The sodium transporter exchange one hydrogen ion for each sodium ion, in peritubular capillaries.
Correct Answer: C
Solution :
During urine formation, the tubular cells secrete sub- stances like H+, K+ and ammonia into the filtrate. Tubular secretion is also an important step in urine formation as it helps in the maintenance of ionic and acid base balance of body fluids. Hence, the correct option is [c].
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