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

How enzyme to cut two pieces of dna, Critical Thinking Why is it necessary ...

Critical Thinking Why is it necessary to use the same restriction enzyme to cut two pieces of DNA that are to be joined together? As each restriction enzyme recognizes a specif

What is plutonium reprocessing, Q. What is plutonium reprocessing? Why is i...

Q. What is plutonium reprocessing? Why is it a big environmental issue? The Plutonium is the highly radioactive chemical element produced from uranium by nuclear plants. The Pl

What is invertebrates, What is Invertebrates? Invertebrates: About 99...

What is Invertebrates? Invertebrates: About 99% of all the animals lack backbones, and are invertebrates! Invertebrates include the phylum Arthropoda, or the animals with joi

Biological fixation - nitrogen fixation, Biological fixation - Nitrogen Fix...

Biological fixation - Nitrogen Fixation Approximately 63% of all nitrogen fixed is through biological fixation. Nitrogen fixing organisms are primarily prokaryotes; bacteria a

Rk, how many chromosomes in human

how many chromosomes in human

Do moulds need water for growth, Do moulds need water for growth? Place...

Do moulds need water for growth? Place a spoonful of dry cereal like as rice or oatmeal in a sterile culture dish. Place a like amount of the similar cereal cooked in another c

Define stomata, What are the stomata? How these structures participate in t...

What are the stomata? How these structures participate in the plant transpiration? The Stomata (singular, stoma) are small specialized passages for gases and water present in t

FISHERIES, skeletal system of fish .exoskeleton and endoskeleton

skeletal system of fish .exoskeleton and endoskeleton

Ancillary and sanitary accomodation, Ancillary Accomodation: Ward Kit...

Ancillary Accomodation: Ward KitchenIPantry:  It should have large sink and drain board along with fly proof door. If  the food is received from central kitchen and tray pre

Predict the genotypes and phenotypes of the f2, In rats, the gene pigment (...

In rats, the gene pigment (P) is dominant to no pigment (p). The gene for black (B) is dominant to the gene for cream (b). If a pigment gene (P) is absent, genes B and b are inoper

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