Which one of the following is likely to accumulate in a dangerous proportion in the blood of a person whose kidney is not working properly?

Lysine

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Ammonia

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Sodium chloride

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Urea

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Solution

The correct option is D Urea
The distal convoluted tubule mainly secretes urea from the blood and it is excreted out as urine from the body. Hence, in kidney impairment, urea is not removed which leads to poison.
So, the correct answer is option D.

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