Marine fish can keep their internal environment hypertonic with respect to the surrounding salty water by retaining.
Correct answer: D. Trimethylamine oxide
- A. Excessive urea which will increase their internal solute concentration and prevent body shrinkage in hypertonic environment
- B. Trimethyl alanine
- C. Ammonia
- D. Trimethylamine oxide
Explanation
Trimethylamine oxide, commonly called TMAO, acts as an important osmolyte in marine animals and helps maintain internal solute balance in salty surroundings. Students may choose trimethyl alanine because its name resembles TMAO, but trimethylamine oxide is the relevant compound.
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