Which one of the following has least toxicity?
Correct answer: C. Uric acid
- A. Ammonia
- B. Urea
- C. Uric acid
- D. All are highly toxic
Explanation
The correct answer is Uric acid. Uric acid is the least toxic nitrogenous waste product because it is almost insoluble in water and can be excreted with minimal water loss, making it less harmful to the organism. In contrast, ammonia is highly toxic due to its solubility and requires significant amounts of water for excretion. Urea is less toxic than ammonia but still more toxic than uric acid. The option stating 'All are highly toxic' is incorrect, as uric acid is not highly toxic.
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.
More Homeostasis questions
The hormone regulates the transfer of sodium from the nephron to the blood.
_ are animals that do not adjust their internal osmolarity and are isotonic with their environment.
When an animal cell is placed in hypotonic environment, it will _
The pH of human urine is
Blood enters the kidney through a branch of the aorta called
It is technique of breaking kidney stones inside kidneys, ureters, and urinary bladder