_ molecule is 100000 times less toxic than ammonia.
Correct answer: B. Urea
- A. Uric acid
- B. Urea
- C. Both
- D. None
Explanation
Urea is a waste product formed in the liver through the urea cycle. It is much less toxic than ammonia, which is why it can safely circulate in the bloodstream and be excreted in urine. Ammonia is highly toxic and needs to be converted into less harmful substances such as urea. Uric acid is also less toxic than ammonia but is less commonly used in mammals as a nitrogenous waste product. Thus, the correct answer is Urea because it fits the criteria of being 100000 times less toxic than ammonia.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Homeostasis
Homeostasis maintains a stable internal environment through the kidney and urinary system, thermoregulation and excretion. The kidney topics include filtration, selective reabsorption, urine formation and water balance, while thermoregulation involves sweating, vasodilation, vasoconstriction and hormonal control; excretion is different from egestion, which removes undigested food.
Practise Homeostasis
698 free Homeostasis MCQs from Biology, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Biology questions like this
Biology is on 8 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.