Question

In Ornithine cycle which one pair of the following wastes are removed from the blood

(a) CO₂ and urea

(b) CO₂ and ammonia

(c) Ammonia and urea

(d) Urea and sodium salts

Answer 1

Correct Option (b) CO₂ and ammonia

Explanation:

CO₂ and ammonia are the pair of wastes removed from the blood in Ornithine cycle. Urea is formed in Ornithine cycle or urea cycle and urea is formed of two molecules of ammonia and one molecule of CO₂. Urea cycle is represented as follows

Most of the. urea rs produced in the liver. The liver cells continuously release urea into the blood and kidneys withdraw it from the blood to excrete it in urine.