Guanotelism - excretion, Biology

Assignment Help:

Guanotelism - Excretion

Arachnids (spiders and scorpions) excrete mostly guanine and hence are said to be guanotelic. Guanine, like uric acid, is relatively non-toxic and insoluble and is excreted in solid form. It is an adaptation to life in arid habitats. It is also a purine and has the same atoms in its ring structure as in uric acid.

In fact, guanine is formed as an intermediate during uric acid synthesis in uricotelic animals. In spiders and scorpions, the inosinic acid pathway terminates in guanine formation. The origin of the four nitrogen atoms of guanine is similar to that of uric acid.


Related Discussions:- Guanotelism - excretion

Explain functional property of foaming, Normal 0 false false ...

Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4

What is mendels second law, What is Mendel's second law? Mendel's seco...

What is Mendel's second law? Mendel's second law postulates that two or more different traits are also conditioned by two or more pair of dissimilar factors and that each inhe

Elaborate the term - gill slits, Elaborate the term - Gill slits. Later...

Elaborate the term - Gill slits. Lateral opening in the wall of pharynx which allows water to enter into mouth and exit through the pharynx. This is one of the ancestral charac

Explain gastro-intestinal system, Explain G.I. (Gastro-Intestinal) system? ...

Explain G.I. (Gastro-Intestinal) system? A. Skeletal muscles directly control the movement of substances at the entrance of the G.I. system. B. Smooth muscles control the mo

Defense mechanisms of the body against harmful agents, Q. What are the two ...

Q. What are the two groups of defense mechanisms of the body against harmful agents or foreign? What is the difference between them? The body has many defense mechanisms agains

Pathology of mitral regurgitation, Q. Pathology of mitral regurgitation? ...

Q. Pathology of mitral regurgitation? During left ventricular systole as the pressure rises in left ventricle, blood is pumped simultaneously both into aorta and left atrium. T

What are the typical vegetation and the typical fauna, What are the typical...

What are the typical vegetation and the typical fauna of the tundra? The Tundra has vegetation formed mainly by lichens and mosses. In the fauna the densely furred animals, lik

Bacteria is an obligate anaerobe, Q. What is signifying when it is said tha...

Q. What is signifying when it is said that a bacteria is an obligate anaerobe? Obligate anaerobes are those living beings that do not survive in the presence of oxygen. For exa

Explanation of glomerular filtration, Question 1) Mentioning the 3 diff...

Question 1) Mentioning the 3 different processes in the formation of urine Explanation of Glomerular filtration Explanation of Tubular reabsorption Explanation of T

Define the sources of vitamin d, Define the Sources of Vitamin D? Vitam...

Define the Sources of Vitamin D? Vitamin D, also called the sunshine vitamin is easily manufactured in the skin from 7-dehydro cholesterol on exposure to sunlight, as already m

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