Question:
The organic molecule that protects body proteins from damaging effect of urea is:
The organic molecule that protects body proteins from damaging effect of urea is:
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TMAO balances urea toxicity in marine fishes.
Updated On: Jun 20, 2026
- Trimethylamine oxide
- Ammonia
- Uric acid
- Ornithine
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The Correct Option is A
Solution and Explanation
Step 1: Understanding urea toxicity.
High urea concentration can destabilize proteins by affecting hydrogen bonding.
Step 2: Need for protective osmolytes.
Marine organisms maintain compatible solutes that counteract urea effects.
Step 3: Role of TMAO.
Trimethylamine oxide (TMAO) stabilizes proteins and counteracts urea toxicity.
Step 4: Evaluating options.
Only TMAO acts as a counteracting osmolyte.
Step 5: Biological reasoning.
Cartilaginous fishes maintain urea + TMAO balance.
Step 6: Final conclusion.
Thus, TMAO is correct answer.
High urea concentration can destabilize proteins by affecting hydrogen bonding.
Step 2: Need for protective osmolytes.
Marine organisms maintain compatible solutes that counteract urea effects.
Step 3: Role of TMAO.
Trimethylamine oxide (TMAO) stabilizes proteins and counteracts urea toxicity.
Step 4: Evaluating options.
Only TMAO acts as a counteracting osmolyte.
Step 5: Biological reasoning.
Cartilaginous fishes maintain urea + TMAO balance.
Step 6: Final conclusion.
Thus, TMAO is correct answer.
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