The most important metabolic pathways of ammonia in the body are:

If you want to know glucose.

The process of phosphorylation, and the metabolic process within the cell after entering the cell. Please buy a biochemistry book. Because this biochemical process is very complex, it involves many chemical formulas, it involves many enzymes, and these molecular formulas cannot be typed on the Internet.

Ammonia is a toxic substance, and the human body must convert ammonia into non-toxic or less toxic substances in time, and then excrete it from the body The main way is to synthesize urea in the liver and excrete it with urine; A part of ammonia can be used to synthesize glutamine and asparagine, and other non-essential amino acids can also be synthesized; Small amounts of ammonia can be excreted directly in the urine

Therefore, d

Synthetic urea. It mainly goes to my liver and is excreted with urine.

The main metabolic pathway before the ammonia deficit in the body is ().

a.Synthesis of non-essential amino acids.

b.Synthesis of essential amino acids.

c.Synthetic NH4 is excreted in the urine.

d.Synthetic urea is excreted in the urine.

e.Combined sales of Wang Qingcheng purine, pyrimidine, etc.

Correct answer: d

Answer]: A The main metabolic de-forming of ammonia in the body is the synthesis of urea. The main metabolic pathway for ammonia in the brain is the synthesis of glutamine. The main metabolic pathway of ammonia in the muscles of Bu Sheng is the synthesis of propylene magentate.

The route of blood ammonia: in the liver it is converted into urea; synthetic amino acids; synthesis of other nitrogenous compounds; synthesis of asparagine and glutamine; Drain directly.

2 Ammonia transport in the blood: The transport of ammonia in the blood circulation needs to be carried out in a non-toxic form, such as the generation of alanine or glutamine, etc., to transport ammonia to the liver or kidney for metabolism.

Alanine-glucose cycle: The amino acids in the muscles and meat transfer the amino group to pyruvate to produce alanine, which is transported to the liver through the blood circulation and then deamino, and the pyruvate generated is converted into glucose by gluconeogenesis and then transported to the muscle through the blood circulation to re-decompose to produce pyruvate, this cycle process is called alanine-glucose cycle.

Ammonia transport of glutamine: extrahepatic tissues, such as brain, skeletal muscle, and heart muscle, synthesize glutamine under the catalysis of glutamine synthetase, and bring the amino group to the liver through blood circulation in the form of glutamine, and then decompose it by glutaminase, and the ammonia produced can be used to synthesize urea. Therefore, glutamine has a transport, storage and detoxification effect on ammonia.

3 Ornithine Cycle and Urea Synthesis: The main metabolic pathway of ammonia in the body is for the synthesis of urea. The main organ contained in synthetic urea is the liver, but it can also be synthesized in small amounts in the kidneys and brain.

Urea synthesis is done through the ornithine cycle, and the enzymes that catalyze these reactions are found in the cytosol and mitochondria. The main reaction process is as follows: NH3 + CO2 + 2ATP carbamoyl phosphate guanidine arginine succinate arginine urea + ornithine.

Characteristics of urea synthesis: synthesis is mainly carried out in the mitochondria and cytosol of the liver; To synthesize one molecule of urea, four molecules of ATP are consumed; Arginine succinate synthase is a key enzyme in urea synthesis; There are two nitrogen atoms in the urea molecule, one for NH3 and one for aspartic acid.

Answer] :d this question examines the metabolism of ammonia, the main route of ammonia in the human body is to synthesize urea in the liver and excrete it from the body.

Answer]: The main metabolic route of ammonia in the body is to synthesize urea with caution. The main metabolic pathway of ammonia in the brain is the synthesis of glutamyl and papamine. The main metabolic pathway for ammonia in muscles is the synthesis of alanine.