Guanotelism - excretion, Biology

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.

Posted Date: 1/16/2013 1:07:56 AM | Location : United States







Related Discussions:- Guanotelism - excretion, Assignment Help, Ask Question on Guanotelism - excretion, Get Answer, Expert's Help, Guanotelism - excretion Discussions

Write discussion on Guanotelism - excretion
Your posts are moderated
Related Questions
Bottleneck for External Sources for Health Care The implementation bottlenecks arising out of funding by external sources have important implications for the resource allocati

habitat, habit, cell wall chemistry, reason why cell wall like this of Archaebacteria , eubacteria,fungi,algae,bryophytes ,pteridophyes, gymnosperms , angiosperms..

Q. What is the major transformation presented by the glomerular filtrate in comparison to the blood? Glomerular filtrate is the name given to the plasma after it has entered th

Explain Pedicellaria in brief? Defensive pincerlike structures found on the surface of echinoderms. They are capable of responding to external stimuli independently from the ma

Define other consideration for Nutrient Requirement and Dietary Management Oral intake is generally feasible only during the anabolic phase wherein the patient should be given

What is the leaf cuticle? The leaf cuticle is a thin waxy layer made of cutin and waxes on the outer surface of the leaf epidermis. Its function is to control the cellular tran

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

Define effect of Protein deficiency during pregnancy period? The effects of protein deficiency during pregnancy are difficult to separate from the effects of caloric deficit, s

define the pattern of cleavage i all aspects

(a) Why are herbivores considered similar to predators in the ecological context Describe? (b)   Differentiate among the following interspecific interactions  in a population :