Question
The characteristic that is shared by urea, uric acid, and ammonia is/are,
(I) They are nitrogenous wastes
(II) They all need a very large amount of water for excretion
(III) They are equally toxic
(IV) They are excretory products
(I) They are nitrogenous wastes
(II) They all need a very large amount of water for excretion
(III) They are equally toxic
(IV) They are excretory products
Answer: Option B
:
B
Urea, uric acid and ammonia are all nitrogenous wastes and excretory products. Ammonia is highly toxic and highly soluble in water, therefore, requires a large amount of water for excretion. Urea is less toxic and less soluble in water than ammonia. Uric acid crystals are non-toxic and almost insoluble in water. So their level of toxicity and the amount of water needed for their elimination differs for each of them.
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:
B
Urea, uric acid and ammonia are all nitrogenous wastes and excretory products. Ammonia is highly toxic and highly soluble in water, therefore, requires a large amount of water for excretion. Urea is less toxic and less soluble in water than ammonia. Uric acid crystals are non-toxic and almost insoluble in water. So their level of toxicity and the amount of water needed for their elimination differs for each of them.
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