NEET Biology Excretory Products and their Elimination Question Bank Self Evaluation Test - Excretory Products and their Elimination

  • question_answer
    Kidneys help in the conservation of useful materials and excretion of wastes and therefore they receive 20% of the heart's output of blood (as much as the heart and brain combined). On a percentage basis, which substance is most completely reabsorbed by the kidneys?

    A) Water           

    B)                    Glucose

    C) Urea                                         

    D) Sodium

    Correct Answer: B

    Solution :

    [b] Glucose is 100% reabsorbed and thus, a healthy person will excrete no glucose in the urine. Sodium and water are usually over 99% reabsorbed. Urea is the main excretory product formed as a result of protein breakdown.


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