A toxin specifically damages the epithelial lining of the proximal convoluted tubule…
Biology · NEET · NTA Exams — Excretory Products and their Elimination
A toxin specifically damages the epithelial lining of the proximal convoluted tubule (PCT). Which of the following would be the most likely direct consequences?
I. Reduced reabsorption of glucose and amino acids.
II. Impaired secretion of hydrogen ions (H⁺) and ammonia.
III. Decreased reabsorption of water in the collecting duct.
IV. Loss of the medullary osmotic gradient.
V. Appearance of glucose in the urine (glycosuria).
Choose the correct answer from the options given below:
- I and II only
- III, IV and V only
- II, III and IV only
- I, II and V only
Answer
(D) I, II and V only
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