Grade 12th passZoology

the end-product of ornithine cycle is

carbon dioxide

uric acid

urea

ammonia

raghav

12 Years agoGrade 12th pass

2 Answers

Apoorva Arora

12 Years ago

Theurea cycle(also known as theOrnithine cycle) is a cycle ofbiochemicalreactions occurring in many animals that producesurea((NH2)2CO) fromammonia(NH3). This cycle was the first metabolic cycle discovered, five years before the discovery of theTCA cycle. Inmammals, the urea cycle takes place primarily in theliver, and to a lesser extent in thekidney.

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Apoorva Arora

IIT Roorkee

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Richa

9 Years ago

The entire process of this cycle converts two amino groups, one from NH₄⁺ and one from Asp, and a carbon atom from HCO₃⁻, to the relatively nontoxic excretion product urea at the cost of four "high-energy" phosphate bonds. To enter the cycle, ammonia is converted to carbomyl phosphate.