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NEET2004ZoologyExcretory Products and their EliminationActual

Which of the following amino acids are present in ornithine cycle?

Options

  1. AValine and cystine
  2. BArginine and citrulline
  3. CGlycine and methionine
  4. DNone of these

Correct answer

B. Arginine and citrulline

Step-by-step solution

Ornithine cycle takes place in liver. The amino acid arginine and citrulline are formed during this cycle. Therefore it is referred as ornithine, arginine cycle and also Kreb-Henseleit cycle. The products of this cycle are urea and ornithine. The substances excreted through this cycle are CO ₂ and NH ₃

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