The bioenergetics of the urea cycle are O o O O such that its energetic cost is

Question

The bioenergetics of the urea cycle are O o O O such that its energetic cost is compensated for by the Krebs bicycle and its associated reactions. such that the overall ation of the cydle shows the energetic equivalent of the hydrolysis of three ATP to ADP and P such that ATP is only hydrolyzed by carbamoyl phosphate synthetase I. recovered when ATP is produced in the breakdown of urea in the kidneys. is not a dietary essential amino acid. Threonine O Serine Isoleucine O Valine Which statement regarding genetic defects in the urea cycle is false? O In some cases, supplementation of the diet with arginine can be helpful; in others, O One of the major problems that can occur is hyperammonemia. O Some affected patients manage their disease with a protein-free diet. O A person with any defect in an enzyme of the cycle cannot tolerate a protein-rich diet. arginine must be eliminated from the diet.

Explanation / Answer

1. The overall reaction of urea cycle shows the energetic equivalent of hydrolysis of 3 ATPs into ADP and Pi.

2. Serine is not a dietary essential amino acid.

3. Arginine supplementation can be helpful but in others arginine must be eliminated from diet.

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