Question

Choose the incorrect statement from the following statements
I) GFR in a healthy individual is approximately 125 ml/hr.
II) During urine formation, the tubular cells secrete substances like $H^{+}$, $K^{+}$ and ammonia into the filtrate.
III) On an average, 1100-1200 ml of blood is filtered by the kidneys per minute.
IV) Substances like glucose, amino acids, $N{a}^{+}$ in the filtrate are reabsorbed by passive transport.

• A. I and III
• B. I only
• C. II and III
• D. I and IV

Answer 1

The correct option is D I and IV

GFR (glomerular filtration rate) is the amount of filtrate formed per minute by the glomerulus of the nephrons in the kidneys. In a healthy person, the GFR is about 125 ml/min which makes 180 liters per day.
In different segments of nephron, the tubular epithelial cells reabsorb substance either actively or passively. Substances like glucose, amino acids, $N{a}^{+}$ in the filtrate are reabsorbed actively whereas the nitrogenous wastes are reabsorbed passively.