I keep getting “Nitrogenous waste” questions wrong in Excretory Products & Elimination. What's the trap?
thinking humans excrete ammonia directly.
The usual trap: thinking humans excrete ammonia directly. How to avoid it: ammonia is toxic, so mammals convert it to safer urea. Go back to the definition — humans mainly excrete urea, so we are ureotelic.
Key point
Nitrogenous waste
Common mistake
thinking humans excrete ammonia directly.
Memory tip
ammonia is toxic, so mammals convert it to safer urea.
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