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

Main manifestations of cholera, Q. What is the etiological agent and the ma...

Q. What is the etiological agent and the main manifestations of cholera? The Cholera is a bacterial disease caused by the Vibrio cholerae. The disease is spread by fecal-oral r

Genomic dna libraries , A genomic DNA library is made from the genomic DNA ...

A genomic DNA library is made from the genomic DNA of an organism. For instance, a mouse genomic library could be made by digesting mouse nuclear DNA with a restriction nuclease to

Define some example of acidic and basic buffer, Define Some Example of Acid...

Define Some Example of Acidic and Basic Buffer? Frequently used example of acidic and basic buffer includes: - Acidic buffer: a mixture of CH 3 COOH (acetic acid) + CH 3 C

Explain about colloidal system, Explain about colloidal system A colloi...

Explain about colloidal system A colloidal system, on the other hand, is a heterogeneous system. The material that forms the base of the system is called  the dispersion medium

Describe about human eye and how it is working., The human eye is an organ ...

The human eye is an organ which reacts to light for various purposes. As a conscious sense organ, the mammalian eye permits vision. Cone and Rod cells in the retina allow conscious

Describe RNA Structure, The basic parts of RNA are the same than for DNA wi...

The basic parts of RNA are the same than for DNA with two major differences. The pyrimidyne base uracil exchange thymine and ribose replace deoxyribose see the sugar, pyrimidines a

Diversity, Importance of diversity

Importance of diversity

Describe about investigative tools and their optimal use, Describe about In...

Describe about Investigative Tools and their Optimal Use ? The investigative tools that are available for diagnosis of CHD include ECG, chest X-ray, 2D and Doppler echocardiog

Which are the organs of the excretory system, Which are the organs of the e...

Which are the organs of the excretory system? The excretory system is produced of kidneys (two), ureters (two), bladder and urethra. The Excretory System - Image Diversity:

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