Physiology of excretion, Biology

Assignment Help:

PHYSIOLOGY OF EXCRETION -

1.      FORMATION OF UREA -

It takes place in liver.

(i) Deamination

799_formation of urea.png

(ii) Ornithine cycle or urea cycle -

  • Explained by H. Kreb and Hansleit. 2 mol of NH3, 1 CO2, 2H2O combine to form urea as byproduct.
  • 3 A.T.P. are consumed.
  • Process takes place in five steps -

Enzyme used in five steps are -

1. Carbamyl phosphate synthatase                       

2. Ornithine carbamyl transferase.

3. Argino-succinic acid synthetase                       

4. Argio-succinase                                

5. Arginase

1438_formation of urea1.png


Related Discussions:- Physiology of excretion

Name some emulsifiers which are present in nature, Name some emulsifiers wh...

Name some emulsifiers which are present in nature? There are many emulsifiers which are present in nature such as phospholipids e.g. lectin which is present in egg yolk which a

Explain prophylaxis with antimicrobial, Explain Prophylaxis with antimicrob...

Explain Prophylaxis with antimicrobial Prophylaxis with antimicrobials has decreased the incidence of surgical site infection after head and neck operations that involve an inc

Explain global burden in the history of mart disease, Explain Global burden...

Explain Global burden in the history of mart disease? In 2001, 17 million people died of CVD of all types. The most important causes were ischemic heart disease (IHD), Hyperten

What are the typical features of mammals, Q What are the typical features o...

Q What are the typical features of mammals? The typical features of mammals are: body (less or more) covered with hair; presence of the diaphragm muscle that separates the thor

Gene expression is controlled by chromatin state, Gene expression is contro...

Gene expression is controlled by chromatin state, _______ and _________. a. transcription factors and epigenetic regulators b. polymerases and control proteins c. delta and tau pro

Succession, why succession more likely to occur on valley floor than steep ...

why succession more likely to occur on valley floor than steep slopes

What do you mean by inflammation, Q. What is inflammation? Inflammation...

Q. What is inflammation? Inflammation is the initial response of the unspecific defense system versus aggressions against the body the aggressions may be caused by trauma, infe

What is the impaired healing, Impaired Healing and Infection Because of Imp...

Impaired Healing and Infection Because of Improper Flap Design The oral field in itself is a contaminated area due to the presence of the normal oral microflora. Improper flap

Ventilation of tracheal system – passive suction ventilation, Ventilation o...

Ventilation of Tracheal System – Passive Suction Ventilation Many active insects and insects that live in environments where water is scarce cannot depend on diffusion alone t

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd