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 about cmc information about drug substance, Question 1: Describ...

Question 1: Describe upon CMC information about drug substance to be submitted to IND for Phase 3 studies. Definition of CMC Explain about CMC information about drug subs

What is the clitellum of earthtworms and where it is located, What is the c...

What is the clitellum of earthtworms and where it is located? The clitellum is a special region of the annelid constituted by rings (metameres) with reproductive function. It c

What is primary motor cortex, Q. What is Primary Motor Cortex? Located ...

Q. What is Primary Motor Cortex? Located in precentral gyrus of frontal lobe (anterior to central sulcus, which separates frontal and parietal lobes.  Neurons called pyramidal

Explain about the fermentation - methods of food processing, Explain about ...

Explain about the Fermentation - methods of food processing? In contrast to other preservation methods, multiplication of microorganisms and their metabolic activities are enco

Define fish as a rich source of protein, Define Fish as a rich source of pr...

Define Fish as a rich source of protein? The edible portion is skeletal muscles of the body. Even though the skeletal muscles of different animals are basically similar, fish s

How the brain influences or controls immune system, How the brain influence...

How the brain influences or controls immune system Scientists are still working to determine to what degree, and how, the brain influences or controls immune system functions,

Explain insect resistant crops in evolutionary way, Explain Insect resistan...

Explain Insect resistant crops in Evolutionary way Insects are a natural selection pressure so plants resistant to certain insects could have an evolutionary advantage (in

What is the function of the feet in molluscs, What is the function of the f...

What is the function of the feet in molluscs? How is the mollusc foot related to the name given to the classes of the phylum? The mollusc foot has the function of locomotion, s

Describe ventricular and great vessel pressures, Q. Describe Ventricular an...

Q. Describe Ventricular and Great Vessel Pressures? Ventricular Pressure RV and LV waveforms are similar in morphology but different in magnitude. The duration of systole an

Define precautions for estimation of vitamin c in a solution, Define Precau...

Define Precautions for estimation of vitamin c in a solution? 1. Rinse all glassware with 3% metaphosphoric acid before you begin your practical and subsequently each time you

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