Uricotelism, Biology

Assignment Help:

Uricotelism

In animals which inhabit extremely arid environments, ammonia is converted into  uric acid. Uric acid is least toxic, relatively insoluble and is easily precipitated. Hence, it can be excreted in solid form without loss of substantial amount of water. Pulmonate snails, terrestrial insects, squamate reptiles (lizards and snakes) and birds excrete a major portion of their waste nitrogen in the form of semi-solid or solid uric acid and hence are referred to as uricotelic animals.

1807_Uricotelism.png

Figure: Uric Acid

The synthesis of uric acid from ammonia in these animals occurs by the inosinic acid pathway. This pathway was first elucidated by Buchanan and his co- workers in the 1950s in pigeon liver. Uric acid is a member of the purines. While the details of the pathway are beyond the scope of this unit, in Figure the different fragments from which the uric acid molecule is assembled is shown. The dashed lines which divide the uric acid molecule in the Figure indicate the building blocks from which its biosynthesis takes place.


Related Discussions:- Uricotelism

Define the hydrogen ion concentration in red blood cells, Which of the foll...

Which of the following processes help bring oxygen to the body cells that are in a leg? A. Net flux of oxygen from blood plasma into red blood cells in the body capillaries in

Describe cytokinesis in a plant cell, Describe cytokinesis in a plant cell....

Describe cytokinesis in a plant cell. Vesicles produced by the Golgi apparatus fuse at  the midline of the cell to form the cell plate, a  cell wall that elongates to divide th

Dopamine for working memory, Dopamine is important for working memory and d...

Dopamine is important for working memory and drug that increases the level of dopamine in the brain or facilities the action of dopamine, enhances working memory capabilities.Dopam

Objection, i have question that all scientist agree that the basic unit off...

i have question that all scientist agree that the basic unit off life is a cell and scientist said this to be a cell theory... and they also said that if a theory survive continuou

Define the requirements of root-end filling materials, Define the Requireme...

Define the Requirements of Root-End Filling Materials 1.  Seal well 2.  Well tolerated by periapical tissues "Biocompatible" 3.  Easily inserted "manipulated" 4.  Unr

Total fertility rate, Total Fertility Rate Total fertility rate (TFR) ...

Total Fertility Rate Total fertility rate (TFR) is the total number of children a women can be expected to bear in a given population if birth rates are constant for at least

Complications of phototherapy, Complications of Phototherapy i) Inse...

Complications of Phototherapy i) Insensible water loss: There is increased insensible water loss in infants undergoing phototherapy. ii) Gastrointestinal effects: Photot

Where can rna are found within cells, In the eukaryote cell nucleus, RNA ca...

In the eukaryote cell nucleus, RNA can be found dispersed in the nuclear fluid, along with DNA, and as the major constituent of the nucleolus. In cytosol (in eukaryotes or in bacte

Explain voriconazole, Explain Voriconazole It has a spectrum of activit...

Explain Voriconazole It has a spectrum of activity similar  to itraconazole but appears to be more active against Aspergillus spp. And some species of  Candida, containing  C.

Apiculture, Apiculture : This is the study of bee-keeping for obtaining wax...

Apiculture : This is the study of bee-keeping for obtaining wax and honey.  Beekeeping is also known as apiculture, it is taken from Latin apis, bee. Apiculture is the maintenance

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