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

Natural toxins, Some plants and animals originate food contain toxic substa...

Some plants and animals originate food contain toxic substances. Some pulses and legumes contain a number of toxic substances such as protease inhibitors, lathyrogens, and flavism

Why water is a essential nutrient for life, Why Water is a essential nutrie...

Why Water is a essential nutrient for life? In this unit, we learnt that water in spite of being ignored, is an essential nutrient required for life. Though the content of tota

What are cell kind that form the xylem, What are cell kind that form the xy...

What are cell kind that form the xylem? What are the major features of those cells? The major cells of the xylem are the tracheids and the vessel elements (these only in angios

Zoology, characteristics of class mamalias

characteristics of class mamalias

Zoology, what are the physical requirements to become a zoologist?

what are the physical requirements to become a zoologist?

How the respiratory system in aquatic molluscs characterized, Q. How is the...

Q. How is the respiratory system in aquatic molluscs characterized? What adaptive respiratory structure do terrestrial molluscs present? In terrestrial molluscs the rich vascul

Osmoregulation, how is water lost from respiratory surface

how is water lost from respiratory surface

What is indications operation single ventricle physiology, What is Indicati...

What is Indications for Operation Single Ventricle Physiology ? The operation is indicated in patients with single ventricle physiology. Fontan operation is also indicated in p

Arthropods - regeneration in invertebrates, Arthropods - Regeneration in In...

Arthropods - Regeneration in Invertebrates Among arthropods like insects, crustaceans, centipedes, scorpions and spiders, the capability of regeneration is low or not present.

Acquired aortic stenosis-types of aortic stenosis, Acquired Aortic Stenosis...

Acquired Aortic Stenosis :  a) Rheumatic: In developing countries rheumatic aortic valve disease is more common than degenerative one. Mitral valve involvement is a common as

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